Viscoelasticity, Creep and Oscillation Experiment. Basic Seminar Applied Rheology
|
|
- Barbra Townsend
- 5 years ago
- Views:
Transcription
1 Viscoelasticity, Creep and Oscillation Experiment Basic Seminar Applied Rheology
2 Overview Repetition of some basic terms Viscoelastic behavior Experimental approach to viscoelasticity Creep- and recovery Oscillation Repetition of some basic terms Amplitude sweep Frequency sweep Temperature sweep Time sweep Expansion of the measuremnent range for Oscillation Time Temperature Superposition (TTS) principle Cox-Merz Rule 2
3 Repetition of some basic terms Calculation of the dynamic viscosity Viscosity (dynamic) [Pa s] Shear stress [Pa] Deformation [-] Shear rate. [1/s] = 3
4 Repetition of some basic terms Calculation of the dynamic viscosity y A F y x v = Force Area = F A N m 2 = Pa = Displacement Distance = x y m m = dv dy = d dt m 1 = s m s 4
5 Viscoelasticity Repetition of some basic terms Viscoelastic behavior Experimental approach to viscoelasticity Creep and recovery Oscillation Viscoelastic behavior Amplitude sweep Frequency sweep Time sweep Temperature sweep Expansion of the measurement range for oscillation Time Temperature Superposition (TTS) principle Cox-Merz Rule 5
6 Viscoelastic behavior Reasons for viscoelasticity Entenglements Network formation Polymer solutions Polymer melts Emulsions Suspensions 6
7 Viscoelastic behavior Appying Hookke s law to rheology Purely elastic behavior Viscoelastic behavior Spring l y x A F l F k = Spring constant = F l = x y = F A Result Complex modulus G* G* = Pa 7
8 Viscoelastic behavior Models for viscoelasticity Viscous Viscoelastic =. = G* Elastic F = k l Dash pot Maxwell Model Burgers Model Voigt/Kelvin Model Spring 8
9 Viscoelasticity Repetition of some basic terms Viscoelastic behavior Experimental approach to viscoelasticity Creep and recovery Oscillation Experimental approach to viscoelasticity Amplitude sweep Creep Frequency and sweep recovery Time sweep Temperature sweep Expansion of the measurement range for oscillation Time Temperature Superposition (TTS) principle Cox-Merz Rule 9
10 Experimental approach to viscoelasticity Creep and recovery The viscoelastic behavior is observed by applying instantaneous shear stress changes. Non-destructive method (within the LVB) Destinguishes between elastic and viscous properties Determination of the time-dependent reaction to such changes 10
11 Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Viscous Sample = Rheometer input Irreversible deformation Applied energy dissipates completely Time 11
12 Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Elastic sample F = k l Rheometer input Reversible deformation Applied energy is stored Time 12
13 Elastic part Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Viscoelastic sample Rheometer input Viscous part Time 13
14 Elastic part Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Results Rheometer input 0 Zero shear viscosity e0 Equillibrium deformation r Recoverable deformation 0 Retardation time G 0 Elastic modulus Applications Leveling Sagging Shear stability Yield stress Viscous part Time 14
15 Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Results Rheometer input 0 Zero shear viscosity e0 Equillibrium deformation r Recoverable deformation 0 Retardation time G 0 Elastic modulus Applications t. t = =. Leveling Sagging Shear stability Yield stress Time 15
16 Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Results 0 Zero shear viscosity e0 Equillibrium deformation r Recoverable deformation 0 Retardation time G 0 Elastic modulus Applications Rheometer input e0 Leveling Sagging Shear stability Yield stress Time 16
17 Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Results Rheometer input 0 Zero shear viscosity e0 Equillibrium deformation r Recoverable deformation 0 Retardation time G 0 Elastic modulus r Applications Leveling Sagging Shear stability Yield stress Time 17
18 Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Results Rheometer input 0 Zero shear viscosity e0 Equillibrium deformation r Recoverable deformation 0 Retardation time G 0 Elastic modulus 0 Applications Leveling Sagging Shear stability Yield stress Time 18
19 Shear stress Deformation Experimental approach to viscoelasticity Creep and recovery Results 0 Zero shear viscosity e0 Equillibrium deformation r Recoverable deformation 0 Retardation time G 0 Elastic modulus Applications Rheometer input 0 Leveling Sagging Shear stability Yield stress = G Time 19
20 Viscoelasticity Experimental approach to viscoelasticity Oscillation 20
21 Oscillation Principle of measurement Two-Plates-Model x 2 x 2 x 1 x 1 y A usually sinosoidal oscilllation is being applied by the rheometer Controllable parameters are the maximum amplitude ( x i ) of the shear stress ( ) or deformation ( ) as well as the (angular) frequency (f, ) and the temperature (T) 21
22 Deformation Y Axis Title Shear stress Oscillation Principle of measurement Rheometer input B e.g. Plate Rotor Rotor Rotor 0 Sample X Axis Title Time Stationäre Stationary plate Platte 22
23 Y Axis Title Shear stress Deformation Oscillation Principle of measurement Purely elastic sample B B Input Shear stress (CS) Deformation (CD) resp. Response Deformation 0 = 0 Shear stress resp. 23 Phase angle X Axis Title 4 6 X Axis Title Time
24 Y Axis Title Shear stress Deformation Oscillation Principle of measurement Purely viscous sample B Input Shear stress (CS) Deformation (CD) resp. Response 0 Deformation Shear stress Phase angle resp. = X Axis Title Time 24
25 Y Axis Title Y Axis Title Y Axis Title Shear stress Deformation Oscillation Principle of measurement Viscoelastic sample B B B Input Shear stress (CS) Deformation (CD) resp. 0 Response Deformation Shear stress resp. Phase angle X Axis Title 0 < < 90 X Axis Title X Axis Title Time
26 Y Axis Title Shear stress Deformation Oscillation Principle of measurement B CS-Input Shear stress (t) = sin( t) 0 Response Deformation X Axis Title Time (t) = sin( t - ) 26
27 Imaginary part Oscillation Results I Complex modulus G* = G + i G (i 2 = -1) Storage modulus G (elastic part) Pure Viscoelastic viscouse sample G = G* G = > 0 G = > 90 0 Loss modulus G (viscous part, damping) G* G Real part 27
28 Imaginary part Oscillation Results I Complex modulus G* = G + i G (i 2 = -1) Storage modulus G (elastic part) Pure elastic sample Purely viscous sample G = G* G = 0 = 90 Loss modulus G (viscous part, damping) G = G* Real part 28
29 Imaginary part Oscillation Results I Complex modulus G* = G + i G (i 2 = -1) Storage modulus G (elastic part) Purely elastic sample G = 0 = 0 Loss modulus G (viscous part, damping) G = G* Real part 29
30 Oscillation Results II Phase angle (0 90 ) Loss factor tan = G / G Complex viscosity Angular frequency *= G* / i = 2 f (f = frequency) 30
31 Viskoelastizität Oscillation Amplitude sweep 31
32 Oscillation Amplitude sweep Increasing amplitude in shear stress (CS) or deformation (CD) with constant frequency Determination of the linear-viscoelastic range (LVR), where material functions (G,G, ) are independent of the stress or the deformation applied Information about product stability e.g. gel strength 32
33 Deformation Shear stress Oscillation Amplitude sweep Increasing amplitude inshear stress (CS) or deformation (CD) with const. frequency Time 33
34 Storage modulus G Oscillation Amplitude sweep Plotted over 10 Hz 1 Hz Width of the linearviscoelastic regime (LVB) depends on the frequency 0.1 Hz Plotted over End of LVR Width of LVB is less frequency depending Shear stress 34
35 Viskoelastizität Oscillation Frequency sweep 35
36 Oscillation Frequency sweep Variation of frequency with constant shear stress or deformation respectively Determination of material s structure Determination of material s properties, which cannot be measured in shear 36
37 Deformation Shear stress Oscillation Frequency sweep Variation of Frequency with const. shear stress or deformation Time 37
38 log Storage modulus G log Loss modulus G Oscillation Frequency sweep Viscous Flow The samples behaves mainly viscous over the entire measuring range G < G log Angular frequency For ideal viscous samples: Slope G ( ) = 2 Slope G ( ) = 1 38
39 log Storage modulus G log Loss modulus G Oscillation Frequency sweep Elastic Plateau Sample behavior is dominated by the elastic properties G > G log Angular frequency Examples: Cross linked Polymers Physical Networks 39
40 log Storage modulus G log Loss modulus G Oscillation Frequency sweep Viscoelastic behavior In the region of low frequencies the sample behaves viscous At high frequencies the elastic behavior predominates Cross-Over-Point G = G log Angular frequency 40
41 Phase angle Oscillation Frequency sweep Flow Cross-Over-Point log Loss modulus G log Storage modulus G 45 The Cross-Over-Point G = G separates viscous flow at low frequencies and elastic behavior at higher frequencies Elastic behavior log Angular frequency 41
42 log Loss modulus G log Storage modulus G Oscillation Frequency sweep Narrow distribution High M w Low M w Polymer Fluids The location of the cross over point depends on: Broad distribution The average molecular weight (M w ) The molecular weight distribution (MWD) log Angular frequency 42
43 Oscillation Frequency sweep log Loss modulus G log Storage modulus G c Polymere Fluide T T The location of the cross over point depends on: The temperature T c The polymer concentration c (for polymer solutions) log Angular frequency 43
44 Viskoelastizität Oscillation Temperature sweep 44
45 Oscillation Temperature sweep Variation of the temperature with constant shear stress or deformation and (angluar) frequency,f Determination of the temperature depending sample charteristics Determination of the glas transition, softening and melting temperature Investigation of chrystallization processes and sol-gel transitions 45
46 Deformation Shear stress Temperature Oscillation Temperature sweep Variation of the temperatur with const. shear stress or deformation and (agular) frequency,f Time 46
47 log loss modulus G log storage modulus G tan Oscillation Temperature sweep Amorphous polymers Not cross linked No positional order Random orientation Examples: Glass transition T g Temperature T Polystyrene Polyvinylchloride Polycarbonate 47
48 log loss modulus G log storage modulus G tan Oscillation Temperature sweep Semi crystalline Polymers Melting temperature T m Not cross linked Partially ordered structure Partially oriented Glass transition T g Temperature T Examples: Low Density Polyethylen High Density Polyethylen Polypropylen 48
49 log loss modulus G log storage modulus G tan Oscillation Temperature sweep Cross-linked Polymers Glass transition T g Temperature T Via covalent or ionic bonds cross-linked macro molecules Examples: Depending on the cross-link density Elastomers (wide-meshed) Thermosets (close-meshed) 49
50 Viscoelasticity Repetition of some basic terms Viscoelastic behavior Experimental approach to viscoelasticity Creep and recovery Oscillation Expansion of the measurement range for oscillation Amplitude sweep Time Temperature Superposition (TTS) principle Frequency sweep Time sweep Temperature sweep Expansion of the measurement range for oscillation Time Temperature Superposition (TTS) principle Cox-Merz Rule 50
51 log Storage modulus G log Loss modulus G Oscillation Frequency sweep Viscous Flow Elastic Plateau Glassphase Inertia effects of rheometer limit the measurement range towards high frequencies Long Measurement times limit the measurement range towards small frequencies Measuring range log Angular frequency 51
52 Oscillation Frequency sweep Freq. [Hz] Time [s] Time [min] Time [h] Time [d]
53 log Loss modulus G Expansion of the measurement range Time Temperature Superposition (TTS) Performance Several frequency sweeps are being performed at different temperatures log Storage modulus G ( ) = T 1 = T 2 = T 3 T 1 < T 2 < T 3 Standard frequency range 53
54 log Storage modulus G log Loss modulus G Expansion of the measurement range Time Temperature Superposition (TTS) Expanded frequency range 54
55 log Loss modulus G log Storage modulus G log Complex viscosity Expansion of the measurement range Time Temperature Superposition (TTS) * = G* / i Expanded frequency range 55
56 log Loss modulus G log Storage modulus G log Complex viscosity Expansion of the measurement range Time Temperature Superposition (TTS) Determination of the zero shear viscosity 0 Expanded frequency range Determination of the viscosity at high frequencies / velocities and short relaxation times 56
57 log Dynamic viscosity log Complex viscosity Expansion of the measurement range Cox-Merz Rule Empiric Rule Valid for numerous unfilled polymer melts and polymer solutions Validity in the Non- Newtonian may vary * [rad/s] = [s -1 ] Not valid for dispersions, suspensions and gels. log Shear rate [s -1 ] / log Angular frequency [rad/s] 57
58 Any questions? Thank you for your attention 58
Guideline for Rheological Measurements
Guideline for Rheological Measurements Typical Measurements, Diagrams and Analyses in Rheology www.anton-paar.com General Information: = Measurement = Diagram = Analysis Important Rheological Variables:
More informationCM4655 Polymer Rheology Lab. Torsional Shear Flow: Parallel-plate and Cone-and-plate
CM4655 Polymer heology Lab Torsional Shear Flow: Parallel-plate and Cone-and-plate (Steady and SAOS) Professor Faith A. Morrison Department of Chemical Engineering Michigan Technological University r (-plane
More informationDynamic Mechanical Analysis of Solid Polymers and Polymer Melts
Polymer Physics 2015 Matilda Larsson Dynamic Mechanical Analysis of Solid Polymers and Polymer Melts Polymer & Materials Chemistry Introduction Two common instruments for dynamic mechanical thermal analysis
More informationUniversity Graz / Austria Institut für Chemie Volker Ribitsch
University Graz / Austria Institut für Chemie Volker Ribitsch 1 Rheology Oscillatory experiments Dynamic experiments Deformation of materials under non-steady conditions in the linear viscoelastic range
More informationLecture 7: Rheology and milli microfluidic
1 and milli microfluidic Introduction In this chapter, we come back to the notion of viscosity, introduced in its simplest form in the chapter 2. We saw that the deformation of a Newtonian fluid under
More informationNon-linear Viscoelasticity FINITE STRAIN EFFECTS IN SOLIDS
FINITE STRAIN EFFECTS IN SOLIDS Consider an elastic solid in shear: Shear Stress σ(γ) = Gγ If we apply a shear in the opposite direction: Shear Stress σ( γ) = Gγ = σ(γ) This means that the shear stress
More informationAbvanced Lab Course. Dynamical-Mechanical Analysis (DMA) of Polymers
Abvanced Lab Course Dynamical-Mechanical Analysis (DMA) of Polymers M211 As od: 9.4.213 Aim: Determination of the mechanical properties of a typical polymer under alternating load in the elastic range
More informationRheology of cellulose solutions. Puu Cellulose Chemistry Michael Hummel
Rheology of cellulose solutions Puu-23.6080 - Cellulose Chemistry Michael Hummel Contents Steady shear tests Viscous flow behavior and viscosity Newton s law Shear thinning (and critical concentration)
More informationMechanical properties of polymers: an overview. Suryasarathi Bose Dept. of Materials Engineering, IISc, Bangalore
Mechanical properties of polymers: an overview Suryasarathi Bose Dept. of Materials Engineering, IISc, Bangalore UGC-NRCM Summer School on Mechanical Property Characterization- June 2012 Overview of polymer
More informationPolymer Dynamics and Rheology
Polymer Dynamics and Rheology 1 Polymer Dynamics and Rheology Brownian motion Harmonic Oscillator Damped harmonic oscillator Elastic dumbbell model Boltzmann superposition principle Rubber elasticity and
More informationMSE 383, Unit 3-3. Joshua U. Otaigbe Iowa State University Materials Science & Engineering Dept.
Dynamic Mechanical Behavior MSE 383, Unit 3-3 Joshua U. Otaigbe Iowa State University Materials Science & Engineering Dept. Scope Why DMA & TTS? DMA Dynamic Mechanical Behavior (DMA) Superposition Principles
More informationEntanglements. M < M e. M > M e. Rouse. Zero-shear viscosity vs. M (note change of slope) Edwards degennes Doi. Berry + Fox, slope 3.4.
Entanglements Zero-shear viscosity vs. M (note change of slope) M < M e Rouse slope 3.4 M > M e Edwards degennes Doi slope 1 Berry + Fox, 1968 Question: Which factors affect the Me: T, P, M, flexibility,
More informationCONSISTENCY OF RHEOLOGICAL EXPERIMENTS FOR PSA CHARACTERIZATION
CONSISTENCY OF RHEOLOGICAL EXPERIMENTS FOR PSA CHARACTERIZATION Dr. Laura Yao, Senior Research Chemist, Scapa North America, Windsor, CT Robert Braiewa, Research Chemist, Scapa North America, Windsor,
More informationIntroduction to Viscometry and Rheology, Basics, Rotational Testing. Basic Seminar Applied Rheology
Introduction to Viscometry and Rheology, Basics, Rotational Testing Basic Seminar Applied Rheology Contents Definition of basic rheological parameters Viscosity and elasticity Deformation, shear stress
More informationFundamentals of Polymer Rheology. Sarah Cotts TA Instruments Rubber Testing Seminar CUICAR, Greenville SC
Fundamentals of Polymer Rheology Sarah Cotts TA Instruments Rubber Testing Seminar CUICAR, Greenville SC Rheology: An Introduction Rheology: The study of stress-deformation relationships =Viscosity =Modulus
More information(Refer Slide Time: 00:58)
Nature and Properties of Materials Professor Bishak Bhattacharya Department of Mechanical Engineering Indian Institute of Technology Kanpur Lecture 18 Effect and Glass Transition Temperature In the last
More informationQuiz 1. Introduction to Polymers
100406 Quiz 1. Introduction to Polymers 1) Polymers are different than low-molecular weight oligomers. For example an oligomeric polyethylene is wax, oligomeric polystyrene is similar to naphthalene (moth
More informationRheology, Adhesion, and Debonding of Lightly Cross-linked Polymer Gels
Rheology, Adhesion, and Debonding of Lightly Cross-linked Polymer Gels Nicholas B. Wyatt, and Anne M. Grillet 2 Materials Science and Engineering Division 2 Engineering Sciences Division Sandia National
More informationDeformation of Polymers. Version 2.1. Boban Tanovic, MATTER David Dunning, University of North London
Deformation of Polymers Version 2.1 Boban Tanovic, MATTER David Dunning, University of North London Assumed Pre-knowledge It is assumed that the user is familiar with the terms elasticity, stress, strain,
More informationFRANK OHENE Department of Chemistry Grambliig State University Grambling, LA 71245
i f i i EFFECT OF COAL BENEFICIATION PROCESS ON RHEOLOGY/ATOMIZATIONOF COAL WATER SLURRIES. Quarterly Progress Report Aprill, 1996 -June 30, 1996 FRANK OHENE Department of Chemistry Grambliig State University
More informationCreep. Creep behavior of viscoelastic polymeric materials
B1 Version: 2.2_EN Date: 15. March 2018. BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS FACULTY OF MECHANICAL ENGINEERING DEPARTMENT OF POLYMER ENGINEERING Creep Creep behavior of viscoelastic polymeric
More informationElements of Polymer Structure and Viscoelasticity. David M. Parks Mechanics and Materials II February 18, 2004
Elements of Polymer Structure and Viscoelasticity David M. Parks Mechanics and Materials II 2.002 February 18, 2004 Outline Elements of polymer structure Linear vs. branched; Vinyl polymers and substitutions
More informationContents. Preface XIII. 1 General Introduction 1 References 6
VII Contents Preface XIII 1 General Introduction 1 References 6 2 Interparticle Interactions and Their Combination 7 2.1 Hard-Sphere Interaction 7 2.2 Soft or Electrostatic Interaction 7 2.3 Steric Interaction
More informationRheological And Dielectric Characterization of Thermosetting Polymers. Jeffrey Gotro, Ph.D.
Rheological And Dielectric Characterization of Thermosetting Polymers Outline Introduction Oscillatory parallel plate rheometry Dynamic dielectric measurements Simultaneous dynamic mechanical/dielectric
More informationCharacterization of the structure at rest in foods (Example: Ketchup)
Characteriszation of the structure at rest / page 1 Characterization of the structure at rest in foods (Example: Ketchup) by Thomas Mezger, Physica Messtechnik GmbH, Ostfildern (Stuttgart), Germany Overview
More informationChapter 6 Molten State
Chapter 6 Molten State Rheology ( 流變學 ) study of flow and deformation of (liquid) fluids constitutive (stress-strain) relation of fluids shear flow shear rate ~ dγ/dt ~ velocity gradient dv 1 = dx 1 /dt
More informationSEISMOLOGY. Master Degree Programme in Physics - UNITS Physics of the Earth and of the Environment ANELASTICITY FABIO ROMANELLI
SEISMOLOGY Master Degree Programme in Physics - UNITS Physics of the Earth and of the Environment ANELASTICITY FABIO ROMANELLI Department of Mathematics & Geosciences University of Trieste romanel@units.it
More informationSTRATEGIES FOR RHEOLOGICAL EVALUATION OF PRESSURE SENSITIVE ADHESIVES
STRATEGIES FOR RHEOLOGICAL EVALUATION OF PRESSURE SENSITIVE ADHESIVES Tianhong T. Chen, Sr. Applications Scientist, TA Instruments Waters LLC, 59 Lukens Drive, New Castle, DE 9720 Abstract Pressure sensitive
More informationRheology and Viscoelasticity
Rheology and Viscoelasticity Key learning outcomes Viscoelasticity, elastic and viscous materials Storage (E ) modulus curve Basic concepts of viscosity and deformation Stress-strain curve Newtonian, dilatant,
More informationThe Rheology Handbook
Thomas G. Mezger The Rheology Handbook For users of rotational and oscillatory rheometers 2nd revised edition 10 Contents Contents 1 Introduction 16 1.1 Rheology, rheometry and viscoelasticity 16 1.2 Deformation
More informationVISCOELASTIC PROPERTIES OF POLYMERS
VISCOELASTIC PROPERTIES OF POLYMERS John D. Ferry Professor of Chemistry University of Wisconsin THIRD EDITION JOHN WILEY & SONS New York Chichester Brisbane Toronto Singapore Contents 1. The Nature of
More informationNotes about this lecture:
Notes about this lecture: There is a lot of stuff on the following slides!!! Make sure you can explain what the following mean: Viscous material and elastic material; viscoelastic Flow curve Newtonian
More informationThe 2S2P1D: An Excellent Linear Viscoelastic Model
The 2S2P1D: An Excellent Linear Viscoelastic Model Md. Yusoff 1, N. I., Monieur, D. 2, Airey, G. D. 1 Abstract An experimental campaign has been carried out on five different unaged and five aged penetration
More informationResponse of an elastic Bingham fluid to oscillatory shear
Rheologica Acta Rheol Acta 26:428-436 (987) Response of an elastic Bingham fluid to oscillatory shear A. S. Yoshimura and R. K. Prud'homme Department of Chemical Engineering, Princeton University Abstract:
More informationOscillatory shear rheology of polymers
Oscillatory shear rheology of polymers Dino Ferri dino.ferri@versalis.eni.com Politecnico Alessandria di Milano, 14/6/22 9 th June 215 Outline - elastic solids and viscous liquids (revision) - viscoelastic
More informationRHEOLOGICAL ANALYSIS FOR DEVELOPMENT AND QUALITY ASSURANCE OF PRESSURE SENSITIVE ADHESIVES
RHEOLOGICAL ANALYSIS FOR DEVELOPMENT AND QUALITY ASSURANCE OF PRESSURE SENSITIVE ADHESIVES Roland H. Horst, Ph.D., Analytical Scientist, Berry Plastics, Franklin, KY Summary Specifications of pressure
More informationEvaluating Pigment Dispersion Quality through Dynamic Oscillation Analysis John Meadows, Surface Specialties - UCB
Evaluating Pigment Dispersion Quality through Dynamic Oscillation Analysis John Meadows, Surface Specialties - UCB Introduction The value of an ink s performance ultimately hinges on the quality of the
More informationCHANGES OF RHEOLOGICAL PARAMETERS OF POLYPROPYLENE AND POLYETHYLENE AFTER EXPOSURE IN ALIPHATIC n-hexane
This copy of the article was downloaded from http://www.mateng.sk, online version of Materials Engineering - Materiálové inžinierstvo (MEMI) journal, ISSN 1335-0803 (print version), ISSN 1338-6174 (online
More informationIn-depth analysis of viscoelastic properties thanks to Microrheology: non-contact rheology
In-depth analysis of viscoelastic properties thanks to Microrheology: non-contact rheology Application All domains dealing with soft materials (emulsions, suspensions, gels, foams, polymers, etc ) Objective
More informationLecture 2. Simple shear devices. Simple shear devices 2. Simple shear devices 3. Moving plate. Velocity V. Force F. Area A. height h.
Lecture 2 Rheometry Simple shear devices Steady shear viscosity Normal stresses Oscillating shear Extensional viscosity Scalings Nondimensional parameter Simple shear devices Conceptual device for simple
More informationThermal Analysis of Polysaccharides Mechanical Methods
Biopolymer Solutions Thermal Analysis of Polysaccharides Mechanical Methods John Mitchell John.Mitchell@biopolymersolutions.co.uk 1 Topics Covered Introduction to polymer viscoelasticity Examples Thermal
More informationMeasuring the rheology of thermoplastic polymer melts
Measuring the rheology of thermoplastic polymer melts Using rotational and capillary rheometry to characterize polymer melts RHEOLOGY AND VISCOSITY Introduction Rheology is the science of studying the
More informationMechanical Properties of Polymers. Scope. MSE 383, Unit 3-1. Joshua U. Otaigbe Iowa State University Materials Science & Engineering Dept.
Mechanical Properties of Polymers Scope MSE 383, Unit 3-1 Joshua U. Otaigbe Iowa State University Materials Science & Engineering Dept. Structure - mechanical properties relations Time-dependent mechanical
More information::: Application Report
Interfacial Shear Rheology of Coffee Samples Explore the secrets of a perfect crema! This application report presents typical measurements on the film formation and on the interfacial rheological properties
More informationShear rheology of polymer melts
Shear rheology of polymer melts Dino Ferri dino.ferri@versalis.eni.com Politecnico Alessandria di Milano, 14/06/2002 22 nd October 2014 Outline - Review of some basic rheological concepts (simple shear,
More informationViscoelasticity. Basic Notions & Examples. Formalism for Linear Viscoelasticity. Simple Models & Mechanical Analogies. Non-linear behavior
Viscoelasticity Basic Notions & Examples Formalism for Linear Viscoelasticity Simple Models & Mechanical Analogies Non-linear behavior Viscoelastic Behavior Generic Viscoelasticity: exhibition of both
More information1912 MEASUREMENT OF HARDNESS OF SEMISOLIDS
BRIEFING 1912 Measurement of Hardness of Semisolids. This proposed new chapter summarizes the mathematical models used to quantify the viscoelastic properties of semisolids, as well as the most common
More informationA new interpretation for the dynamic behavior of complex fluids at the sol-gel transition using the fractional calculus
A new interpretation for the dynamic behavior of complex fluids at the sol-gel transition using the fractional calculus By Stephane Warlus and Alain Ponton Rheol. Acta (009) 48:51-58 Chris Dimitriou NNF
More informationA Comprehensive Approach to Barite Sag Analysis on Field Muds
AADE-13-FTCE-30 A Comprehensive Approach to Barite Sag Analysis on Field Muds Sharath Savari, Sandeep Kulkarni, Jason Maxey, and Kushabhau Teke, Halliburton Copyright 2013, AADE This paper was prepared
More informationMechanical Models for Asphalt Behavior and Performance
Mechanical Models for Asphalt Behavior and Performance All Attendees Are Muted Questions and Answers Please type your questions into your webinar control panel We will read your questions out loud, and
More informationMeasuring structure of low viscosity fluids in oscillation using rheometers with and without a separate torque transducer
ANNUAL RANSACONS OF HE NORDC RHEOLOGY SOCEY, VOL., 003 Measuring structure of low viscosity fluids in oscillation using rheometers with and without a separate torque transducer Aly Franck A nstruments,
More informationExperimentalObservations 2014 CM4650
Done with Material Functions. What now? 1. Intro 2. Vectors/tensors 3. Newtonian 4. Standard Flows 5. Material Functions 6. Experimental Behavior 7. Inelastic effects 8. Memory effects 9. Advanced 1. Rheometry
More informationQuiz 1 Introduction to Polymers
090109 Quiz 1 Introduction to Polymers In class we discussed the definition of a polymer first by comparing polymers with metals and ceramics and then by noting certain properties of polymers that distinguish
More informationStress Overshoot of Polymer Solutions at High Rates of Shear
Stress Overshoot of Polymer Solutions at High Rates of Shear K. OSAKI, T. INOUE, T. ISOMURA Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan Received 3 April 2000; revised
More informationSupplementary material to On the rheology of pendular gels and morphological developments in paste- like ternary systems based on capillary attraction
Electronic Supplementary Material (ESI) for Soft Matter. This journal is The Royal Society of Chemistry 214 Supplementary material to On the rheology of pendular gels and morphological developments in
More informationDYNAMIC MECHANICAL ANALYZER DMA 2980
Prepared by Russell R. Ulbrich Sujan E. Bin Wadud DYNAMIC MECHANICAL ANALYZER DMA 2980 Getting Started Guide for Thermal Advantage Users TABLE OF CONTENTS Mearurement Principles of the DMA 2980 1 Force
More informationLecture 7 Constitutive Behavior of Asphalt Concrete
Lecture 7 Constitutive Behavior of Asphalt Concrete What is a Constitutive Model? A constitutive model or constitutive equation is a relation between two physical quantities that is specific to a material
More informationEXPERIMENTALLY DETERMINING THE VISCOELASTIC BEHAVIOR OF A CURING THERMOSET EPOXY R. Thorpe 1, A. Poursartip 1*
19 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS EXPERIMENTALLY DETERMINING THE VISCOELASTIC BEHAVIOR OF A CURING THERMOSET EPOXY R. Thorpe 1, A. Poursartip 1* 1 Composites Group, Dept. of Materials
More informationViscoelastic Flows in Abrupt Contraction-Expansions
Viscoelastic Flows in Abrupt Contraction-Expansions I. Fluid Rheology extension. In this note (I of IV) we summarize the rheological properties of the test fluid in shear and The viscoelastic fluid consists
More informationUsing Rheological Properties to Evaluate Storage Stability and Setting Behaviors of Emulsified asphalts
Using Rheological Properties to Evaluate Storage Stability and Setting Behaviors of Emulsified asphalts Huachun Zhai, Delmar Salomon * and Eric Milliron Idaho Asphalt Supply, Inc. 2627 Brandt Ave., Nampa,
More informationInfluence of steady shear flow on dynamic viscoelastic properties of un-reinforced and Kevlar, glass fibre reinforced LLDPE
Bull. Mater. Sci., Vol. 27, No. 5, October 2004, pp. 409 415. Indian Academy of Sciences. Influence of steady shear flow on dynamic viscoelastic properties of un-reinforced and Kevlar, glass fibre reinforced
More informationSession 11: Complex Modulus of Viscoelastic Polymers
Session 11: Complex Modulus of Viscoelastic Polymers Jennifer Hay Factory Application Engineer Nano-Scale Sciences Division Agilent Technologies jenny.hay@agilent.com To view previous sessions: https://agilenteseminar.webex.com/agilenteseminar/onstage/g.php?p=117&t=m
More informationMeasurement Engineering Group, Paderborn University, Warburger Straße 100, Paderborn, Germany
Nadine Feldmann 1, Fabian Bause 1, Bernd Henning 1 1 Measurement Engineering Group, Paderborn University, Warburger Straße 100, 33098 Paderborn, Germany feldmann@emt.uni-paderborn.de Abstract The present
More informationThe principals of rheology In pharmaceutical technology
The principals of rheology In pharmaceutical technology Dr. Aleksandar Széchenyi University of Pécs Gyógyszertechnológiai és Biofarmáciai Intézet Institute of Pharmaceutical Technology and Biopharmacy
More informationThe Large Amplitude Oscillatory Strain Response of Aqueous Foam: Strain Localization and Full Stress Fourier Spectrum
The Large Amplitude Oscillatory Strain Response of Aqueous Foam: Strain Localization and Full Stress Fourier Spectrum By F. Rouyer, S. Cohen-Addad, R. Höhler, P. Sollich, and S.M. Fielding The European
More informationRHEOLOGY Principles, Measurements, and Applications. Christopher W. Macosko
RHEOLOGY Principles, Measurements, and Applications I -56081-5'79~5 1994 VCH Publishers. Inc. New York Part I. CONSTITUTIVE RELATIONS 1 1 l Elastic Solid 5 1.1 Introduction 5 1.2 The Stress Tensor 8 1.2.1
More informationHow to measure the shear viscosity properly?
testxpo Fachmesse für Prüftechnik 10.-13.10.2016 How to measure the shear viscosity properly? M p v Rotation Capillary Torsten Remmler, Malvern Instruments Outline How is the Shear Viscosity defined? Principle
More informationJessica Gwyther. Characterisation of Plasticised Nitrocellulose using NMR and Rheology
Jessica Gwyther Characterisation of Plasticised Nitrocellulose using NMR and Rheology 2 Project Aims Prepare 5 inert PBX binder formulations using nitrocellulose polymer and a series of nitroaromatic plasticiser
More informationShatha K. Muallah Bio-Chemical Engineering Department, Al-Khwarizmi Engineering College, University of Baghdad
Iraqi Journal of Chemical and Petroleum Engineering Iraqi Journal of Chemical and Petroleum Engineering Vol.15 No.2 (June 2014) 49-59 ISSN: 1997-4884 University of Baghdad College of Engineering Experimental
More informationQUIZ 2 OPEN QUIZ WHEN TOLD THERE ARE TWO PROBLEMS OF EQUAL WEIGHT. Please answer each question in a SEPARATE book
2.341J MACROMOLECULAR HYDRODYNAMICS Spring 2012 QUIZ 2 OPEN QUIZ WHEN TOLD THERE ARE TWO PROBLEMS OF EQUAL WEIGHT Please answer each question in a SEPARATE book You may use the course textbook (DPL) and
More informationChemical Engineering 160/260 Polymer Science and Engineering. Lecture 14: Amorphous State February 14, 2001
Chemical Engineering 160/260 Polymer Science and Engineering Lecture 14: Amorphous State February 14, 2001 Objectives! To provide guidance toward understanding why an amorphous polymer glass may be considered
More informationMadrid, 8-9 julio 2013
VI CURSO DE INTRODUCCION A LA REOLOGÍA Madrid, 8-9 julio 2013 NON-LINEAR VISCOELASTICITY Prof. Dr. Críspulo Gallegos Dpto. Ingeniería Química. Universidad de Huelva & Institute of Non-Newtonian Fluid Mechanics
More informationPolymerization Technology Laboratory Course
Polymerization Technology Laboratory Course Viscometry/Rheometry Tasks 1. Comparison of the flow behavior of polystyrene- solution and dispersion systems 2. Determination of the flow behaviour of polyvinylalcohol
More informationDetermination of Activation Energy for Glass Transition of an Epoxy Adhesive Using Dynamic Mechanical Analysis
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/51099575 Determination of Activation Energy for Glass Transition of an Epoxy Adhesive Using
More informationG. R. Strobl, Chapter 5 "The Physics of Polymers, 2'nd Ed." Springer, NY, (1997). J. Ferry, "Viscoelastic Behavior of Polymers"
G. R. Strobl, Chapter 5 "The Physics of Polymers, 2'nd Ed." Springer, NY, (1997). J. Ferry, "Viscoelastic Behavior of Polymers" Chapter 3: Specific Relaxations There are many types of relaxation processes
More informationPolymers. Steep Slope = 3/5 : Self-Avoiding Walk (Polymer Solution) Shallow Slope = 1/2 : Gaussian Random Walk (Polymer Melt)
Polymers 1 Polymers Steep Slope = 3/5 : Self-Avoiding Walk (Polymer Solution) Shallow Slope = 1/2 : Gaussian Random Walk (Polymer Melt) 2 If we consider a series of chains = 0 Except when i = j, and
More informationBasics in Rheology Theory TA Rheometers. Oscillation. Transient Testing Applications of Rheology. Flow Tests
Basics in Rheology Theory TA Rheometers Instrumentation Choosing a Geometry Calibrations Flow Tests Viscosity Setting up Flow Tests Oscillation Linear Viscoelasticity Setting up Oscillation Tests Transient
More informationSUMMARY A STUDY OF VISCO-ELASTIC NON-NEWTONIAN FLUID FLOWS. where most of body fluids like blood and mucus are non-newtonian ones.
SUMMARY A STUDY OF VISCO-ELASTIC NON-NEWTONIAN FLUID FLOWS Non-Newtonian fluids abound in many aspects of life. They appear in nature, where most of body fluids like blood and mucus are non-newtonian ones.
More informationD Y N A M I C M E C H A N I C A L A N A L Y S I S A N D I T S A D V A N T A G E S O V E R D E F L E C T I O N T E M P E R A T U R E U N D E R L O A D
D Y N A M I C M E C H A N I C A L A N A L Y S I S A N D I T S A D V A N T A G E S O V E R D E F L E C T I O N T E M P E R A T U R E U N D E R L O A D Sujan E. Bin Wadud TA Instruments 9 Lukens Drive, New
More informationMP10: Process Modelling
MP10: Process Modelling MPhil Materials Modelling Dr James Elliott 0.1 MP10 overview 6 lectures on process modelling of metals and polymers First three lectures by JAE Introduction to polymer rheology
More informationA 1. The Polymer Parameters. Webinar on Accelerated Testing of Adhesives and Polymers- Part One. Strain Energy Total. Time Domain Experiments
A Webinar on Accelerated estin of Adhesives and Polymers- Part One Sponsored by ASC Presented by Dr. homas C. Ward Virinia ech tward@vt.edu A he Polymer Parameters Chemical Composition Molecular Weiht
More informationAblaos Asphalt Binder Large Amplitude Oscillatory Shear
Michael J. Farrar mfarrar@uwyo.edu Jean-Pascal Planche Alec Otto Cookman Steve Salmans Ablaos Asphalt Binder Large Amplitude Oscillatory Shear Binder ETG Baton Rouge, LA Sept. 16, 2014 Outline Linear Viscoelasticity
More informationEvaluating the rheological properties of hyaluronic acid hydrogels for dermal filler applications
Evaluating the rheological properties of hyaluronic acid hydrogels for dermal filler applications RHEOLOGY AND VISCOSITY PARTICLE SIZE Introduction Hyaluronic acid (HA) is a naturally occurring polysaccharide
More informationRheology The relationship between rheological response and material structure
Rheology The relationship between rheological response and material structure Márta Berka University of Debrecen Dept of Colloid and Environmental Chemistry http://dragon.unideb.hu/~kolloid/ Introduction
More informationRheology step 1. Principles of Rheology and its Measurement techniques. Panta Rei. TRAINING. Viscosity, Elasticity and Viscoelasticity
Rheology step 1 Principles of Rheology and its Measurement techniques Viscosity, Elasticity and Viscoelasticity Fresh After 12 h Panta Rei. +46 709787805 www.reokonsa.com 1 (8) For whom: Rheology is the
More informationRheology of Soft Materials. Rheology
Τ Thomas G. Mason Department of Chemistry and Biochemistry Department of Physics and Astronomy California NanoSystems Institute Τ γ 26 by Thomas G. Mason All rights reserved. γ (t) τ (t) γ τ Δt 2π t γ
More informationMeasurement techniques
Measurement techniques 1 GPC GPC = gel permeation chromatography GPC a type of size exclusion chromatography (SEC), that separates analytes on the basis of size. The column used for GPC is filled with
More informationLecture 5. Rheology. Earth Structure (2 nd Edition), 2004 W.W. Norton & Co, New York Slide show by Ben van der Pluijm
Lecture 5 Rheology Earth Structure (2 nd Edition), 2004 W.W. Norton & Co, New York Slide show by Ben van der Pluijm WW Norton; unless noted otherwise Rheology is... the study of deformation and flow of
More informationMECHANICAL AND RHEOLOGICAL PROPERTIES
MECHANICAL AND RHEOLOGICAL PROPERTIES MECHANICAL PROPERTIES OF SOLIDS Extension Shear δ τ xy l 0 l l 0 θ σ Hooke's law σ = Eε Hooke's law τ = G γ xy xy MECHANICAL AND RHEOLOGICAL PROPERTIES RHEOLOGICAL
More informationSynergy of the combined application of thermal analysis and rheology in monitoring and characterizing changing processes in materials
Synergy of the combined application of thermal analysis and rheology in monitoring and characterizing changing processes in materials by A. Franck, W. Kunze, TA Instruments Germany Keywordss: synergy,
More informationBohlin. Rheological instruments backed with rheological experience. Rheological properties
Rheological properties ṙ Bohlin Rheological instruments backed with rheological experience detailed specification sheets from /bohlingemini The Bohlin Gemini rheometers are an advanced range of compact
More informationDYNAMIC AND TRANSIENT TESTING OF ASPHALT BINDER AND PAVING MIX
66 6th RILEM Symposium PTEBM'03, Zurich, 2003 DYNAMIC AND TRANSIENT TESTING OF ASPHALT BINDER AND PAVING MIX L. Zanzotto, O.J. Vacin and J. Stastna University of Calgary, Canada Abstract: A commercially
More informationComments on Use of Reference Fluid to Verify DSR
Comments on Use of Reference Fluid to Verify DSR David Anderson Professor Emeritus Penn State FHWA Asphalt Binder Expert Task Group Baton Rouge, LA September 16-17, 2014 Reference fluid how and why? Used
More informationI. Comparison between rheological data obtained by using the shear rate sweep and frequency
Electronic Supplementary Material (ESI) for Soft Matter. This journal is The Royal Society of Chemistry 2017 ELECTRONIC SUPPLEMENTARY INFORMATION (ESI) I. Comparison between rheological data obtained by
More informationFor an imposed stress history consisting of a rapidly applied step-function jump in
Problem 2 (20 points) MASSACHUSETTS INSTITUTE OF TECHNOLOGY DEPARTMENT OF MECHANICAL ENGINEERING CAMBRIDGE, MASSACHUSETTS 0239 2.002 MECHANICS AND MATERIALS II SOLUTION for QUIZ NO. October 5, 2003 For
More informationPharmaceutics I. Unit 6 Rheology of suspensions
Pharmaceutics I اينالديصيدلينيات 1 Unit 6 Rheology of suspensions 1 Rheology, the science of the flow or deformation of matter (liquid or soft solid) under the effect of an applied force. It addresses
More informationSupplementary Information. Text S1:
Supplementary Information Text S1: In order to characterize the change in visco-elastic response in the course of a shear thickening transition in a controlled shear stress flow, on a fresh sample of for
More informationLecture 4: viscoelasticity and cell mechanics
Teaser movie: flexible robots! R. Shepherd, Whitesides group, Harvard 1 Lecture 4: viscoelasticity and cell mechanics S-RSI Physics Lectures: Soft Condensed Matter Physics Jacinta C. Conrad University
More informationMulti-mode revisited
Multi-mode revisited Testing the application of shift factors S.J.M Hellenbrand 515217 MT 7.29 Coaches: Ir. L.C.A. van Breemen Dr. Ir. L.E. Govaert 2-7- 7 Contents Contents 1 Introduction 2 I Polymers
More informationCOMPLEX EFFECTS OF MOLECULAR TOPOLOGY, LENGTH AND CONCENTRATION ON MOLECULAR DYNAMICS IN ENTANGLED DNA BLENDS
COMPLEX EFFECTS OF MOLECULAR TOPOLOGY, LENGTH AND CONCENTRATION ON MOLECULAR DYNAMICS IN ENTANGLED DNA BLENDS Students Cole E. Chapman Kent Lee Dean Henze Collaborators Doug Smith (UCSD) Sachin Shanbhag
More information