Physics and Chemistry of Hybrid Organic- Inorganic Materials Lecture 12: Polymerizing inorganic monomers dissolved in organic polymers
|
|
- Delilah Kelly
- 5 years ago
- Views:
Transcription
1 Physics and Chemistry of ybrid rganic- Inorganic aterials Lecture 12: Polymerizing inorganic monomers dissolved in organic polymers
2 Key concepts Reasons for making an inorganic filled organic polymer hybrid: improve strength, abrasion resistance, modulus, hardness, inflammability, etal oxide inorganic paricles can be made by sol- gel, flame synthesis rganic phase: organic polymers Inorganic paricles increase viscosity ParIcle aggregaion ruins hybrid effects smaller the paricle, the greater the strength and modulus of the hybrid the higher the paricle concentraion, the greater the strength and modulus of the hybrid
3 aking ybrid aterials: Class 1B (in situ paricle growth) (R') x R' R' R' R' R R' R' R' R' R' R' R R' R' R' Ideally, no Solvent except for monomer(s) No solvent with low t g organic polymers or in polymer melts (< 100 C) or if monomer will is soluble in polymer. therwise solvent may be used to mix before casting.
4 PreparaIon by dissolving inorganic monomer in solid organic polymer then polymerizing to form paricles Solid rganic Polymer Inorganic onomer (liquid) & catalyst Polymerization by: 1) hydrolysis & condensation of (R) n Water diffuses into membrane from air 2) Reduction of metal compound. 2 or polymer itself as reducing agent 3) sulfidation of cations ( 2 S) 4) photochemical or thermal decomposition rganic Polymer Inorganic onomer onomer must be soluble in polymer onomer polymerizes & forms particles
5 PreparaIon by mixing inorganic monomer with liquid organic polymer & hydrolysis & condensaion Liquid rganic Polymer Inorganic onomer (liquid) & catalyst Physical mixing Very few liquid polymers, save some elastomers like polydimethylsiloxane and low molecular weight polybutadiene or polyisoprene rganic Polymer Inorganic onomer 1) Water diffuses in from outside 2) onomer polymerizes 3) Particles phase separate lica-ps materials are looked at later in lecture
6 PreparaIon by mixing inorganic monomer with solid organic polymer and allowing paricles to form Solid rganic Polymer Dissolve rganic Polymer in solvent Inorganic onomer (liquid) Physical mixing Solvent must be removed before polymerization Water for hydrolysis and condensation would be diffused into dry film from air. rganic Polymer Inorganic onomer in solvent rganic Polymer Inorganic onomer Evaporate solvent onomer polymerizes & forms particles Spherical particles lica-nafion materialsmade this way are looked at later in lecture
7 Polymers used Elastomers: silicone, polybutadiene, polyisoprene ThermoplasIcs: polyurethanes, polycarbonates, polyvinylalcohol, polyacrylates, polysulfones, polyethylene oxide (PE), polypropylene oxide (PP) Thermosets: epoxies Polyionomers: Nafion
8 Review of polymerizaions 1) hydrolysis & condensa>on of (R) n or R(R ) 3 2) Reduc>on of metal compound 3) sulfida>on of ca>ons 4) photochemical or thermal decomposi>on
9 ydrolysis & condensaion of (R) n : the monomers licon: (R) 4 or R (R) 3 Aluminum: Al(R) 3 or AlCl Transition metals: z (R) n or z Cl n h 2 z = oxidation number for metal n = number of alkoxide or halide in monomer h = number of coordinating waters
10 ydrolysis & condensaion of (R) 4 ydrolysis R R R R 2 R R R R Condensation R R R R R R R R R R R R Water from Condensation ydrolyzes Additional R R R R R 2 R R R R Net Reaction R R R 2 2 R n Catalyzed by acids (Cl,N 3 ) or bases (N 3 aq, Na) or fluoride. 2
11 ParIcles from hydrolysis & condensaion of (R) 4 Typically leads to amorphous spherical particles (not quartz) Can template particles with ordered mesopores with surfactants Stober synthesis from TES with N 3 and water gives monodisperse particles Emulsion polymerization (water in oil) gives monodisperse particles ther preps give polydisperse particles
12 ydrolysis & condensaion of R(R) 3 ydrolysis R R' R' Condensation R' R' R' R' R' R + R R R + water producing R' R' R' R' R R R R' R R' R R R R' R R R R R R R' R' R' R' R' R' R R R Intramolecular condensation DImerization of two tetramers to give T8 or cyclization R' + ' R + R' R' R R' R R' R' R R R' + R R R R' R R' R' R R' R' R R R' R' R Branching R' n R R' + 1.5n 2 [R 1.5 ] n + 3n R' R' Net reaction
13 ParIcles from hydrolysis & condensaion of R(R) 3 Typically leads to amorphous spherical particles Not as easy to prepare particles as with silica Can template particles with ordered mesopores with surfactants Stober synthesis from TES with N 3 and water affords polydisperse particles Emulsion polymerization (two step) gives monodisperse particles
14 ydrolysis & CondensaIon of z (R) n to = Al, B, Ti, Zr, Cr, Fe.. form n/2 ydrolysis: formation of monomeric species (R) n + n 2 () n + x R in reality: z () n z 2 2 R 2 R Condensation: formation of oxo (neutral) -- R oxidation state increases higher charge & higher p ore reactive, but too high shuts down condensation
15 ydrolysis & CondensaIon of z (R) n to form n/2 lation: formation of oxo (neutral) olation >> oxolation
16 ParIcles from hydrolysis & condensaion of (R) n Particles may be amorphous or crystalline Some amorphous particles will crystallize with time. Stober synthesis from TES with N 3 and water does not work Emulsion polymerization (water in oil) gives monodisperse particles any more molecular clusters are available through olation chemistry
17 ReducIon of metals Ag + N 2 4 Ag Langmuir, 2012, 28 (11), pp Ag +, Pd 2+ hν hydroquinone Ag, Pd Ag +, Pt 2+, Au 2+ e n Ag, Pt, Au acromole. Rapid Comm. 2009, 30, 1116 Pt 2+ 1 and 2 R Pt Soft Nanoscience Letters, 2012, 2, (C) n hν or heat or ultrasound Zeitschrift für Physikalische Chemie 217, 11,
18 etal and SemiconducIng Sulfides z+ 2 S S x z+ S S x J. Am. Chem. Soc., 2003, 125 (36), pp RN 2 S z+ N S - Na+ eat S x CrystEngComm, 2011, 13,
19 in situ lica- Nafion Nanocomposite Solid Nafion Dissolve Nafion in Ethanol (Et) 4 (liquid) Physical mixing Nafion & TES in ethanol Evaporate solvent Nafion T Nafion & TES lica particles form in membrane Spherical particles
20 in situ lica- Nafion Nanocomposite Class 1A Class 1B 5 weight percent ex situ silica in Nafion In situ lica particles
21 In situ filled lica in polydimethylsiloxanes Solid rganic Polymer Inorganic onomer (liquid) & catalyst e e n + x e e e e rganic Polymer Inorganic onomer Sn or Ti Catalyst -4x e [ 2 ] x e e n Spherical particles Journal of Polymer Science Part B: Polymer Physics, 2003, 41, 16
22 In situ filled lica in polydimethylsiloxanes e e n + x e e e e Sn or Ti Catalyst -4x e ighly transparent Does not require mechanical blending [ 2 ] x e e n Journal of Polymer Science Part B: Polymer Physics, 2003, 41, 16
23 In situ filled lica in polydimethylsiloxanes e e n + x e e e e Sn or Ti Catalyst -4x e [ 2 ] x e e n Journal of Polymer Science Part B: Polymer Physics, 2003, 41, 16
24 lver paricles made in situ polydimethylsiloxanes e e n Ag + e n Ag in e e n
25 PE PP PE ydrophilic ydrophilic ydrophobic Templating with triblock copolymer is formally a Class 1B material Polymer is template. After removal, silica remains
26 Summary: In situ formaion of inorganic phases in polymers ethod for mixing at nanoscale without mechanical blending required- less chance for aggregaion and segregaion to occur (steric stabilizaion) Raises modulus and strength of materials In situ polymerizaion of inorganics selecively in blocks of block copolymers- first step to biomimeic mineralizaion.
Polymeric Materials. Sunan Tiptipakorn, D.Eng.
Polymeric Materials Sunan Tiptipakorn, D.Eng. Department of Chemistry, Faculty of Liberal Arts and Science, Kasetsart University, Kamphaen Saen Campus, Nakorn Phathom, 73140 Thailand. Introduction Material
More informationMolecular Precursors for Sol-Gel Hybrid Materials: Fundamentals. Ulrich Schubert Institute of Materials Chemistry
olecular Precursors for Sol-Gel ybrid aterials: Fundamentals Ulrich Schubert Institute of aterials hemistry Sol-Gel Process: etwork Formation by ondensation eactions Si Si Si Si + 2 Sol-Gel Processing:
More informationLecture No. (1) Introduction of Polymers
Lecture No. (1) Introduction of Polymers Polymer Structure Polymers are found in nature as proteins, cellulose, silk or synthesized like polyethylene, polystyrene and nylon. Some natural polymers can also
More informationProton-Conducting Nanocomposites and Hybrid Polymers
Proton-onducting Nanocomposites and Hybrid Polymers Y.D. Premchand 1, M.L. Di Vona 2, and P. Knauth 1 1 Introduction This chapter is about proton-conducting nanocomposites and hybrid polymers. Before beginning
More informationTOPIC 7. Polymeric materials
Universidad Carlos III de Madrid www.uc3m.es MATERIALS SCIENCE AND ENGINEERING TOPIC 7. Polymeric materials 1. Introduction Definition General characteristics Historic introduction Polymers: Examples 2.
More informationChapter 9 Generation of (Nano)Particles by Growth
Chapter 9 Generation of (Nano)Particles by Growth 9.1 Nucleation (1) Supersaturation Thermodynamics assumes a phase change takes place when there reaches Saturation of vapor in a gas, Saturation of solute
More informationECE 5320 Lecture #6 and 7
Lecture #6 and 7 Homework notes: The homework will be posted on the web as a pdf/word file: Homework1-2016spring Your work has to be typed, and I assume that you have sufficient proficiency using MS work
More informationA Glossary of Terms Used in the Adhesives, Coatings and Elastomers (ACE) Sector
A Glossary of Terms Used in the Adhesives, Coatings and Elastomers (ACE) Sector Abrasion resistance The ability of the coating membrane to resist mechanical action such as foot traffic and particles, which
More information1.1 Basic Polymer Chemistry. 1.2 Polymer Nomenclature. 1.3 Polymer Synthesis. 1.4 Chain Growth Polymerization. Polymer =
1.1 Basic Polymer hemistry Polymers are the largest class of soft materials: over 100 billion pounds of polymers made in US each year lassification systems 1.2 Polymer Nomenclature Polymer = Monomer =
More informationProviding sustainable supply of clean water is one of
1 Introduction Fabrication of Water Treatment Membrane Using Templating Method A Critical Review Fabrication of Water Treatment Membrane Using Templating Method A Critical Review ABSTRACT The progress
More informationRepeated insertion. Multiple insertion leads to dimerization, oligomerization or polymerization. κ 1: mainly dimerization κ
Repeated insertion ultiple insertion leads to dimerization, oligomerization or polymerization. k prop Et Key factor: k CT / k prop = κ κ 1: mainly dimerization κ 0.1-1.0: oligomerization (always mixtures)
More information2 Preparation of hollow spheres, microcapsules and microballoons by surfactant free emulsion templating
2 Preparation of hollow spheres, microcapsules and microballoons by surfactant free emulsion templating We report on the synthesis of new types of monodisperse, micrometer-sized hollow particles obtained
More informationSynthesis; sol-gel. Helmer Fjellvåg and Anja Olafsen Sjåstad. Lectures at CUTN spring 2016
Synthesis; sol-gel Helmer Fjellvåg and Anja Olafsen Sjåstad Lectures at CUTN spring 2016 Inorganic Materials Synthesis In January: Solid State Reactions Our text book has extended the definition to any
More information4.1 Atomic structure and the periodic table. GCSE Chemistry
4.1 Atomic structure and the periodic table GCSE Chemistry All substances are made of atoms this is cannot be chemically broken down it is the smallest part of an element. Elements are made of only one
More informationChapter 13 - Polymers Introduction
Chapter 13 - Polymers Introduction I. Nomenclature A. Polymer/Macromolecule polymer - nonmetallic material consisting of large molecules composed of many repeating units - from Greek: poly (many) and meros
More informationPOLYMER CHEMISTRY Lecture/Lession Plan -2
Chapter 6 POLYMER CHEMISTRY Lecture/Lession Plan -2 POLYMER CHEMISTRY 6.0.1 Classification on the basis of tactility On the basis of orientation of functional group or side groups throughout the long backbone
More informationSYNTHESIS OF INORGANIC MATERIALS AND NANOMATERIALS. Pr. Charles Kappenstein LACCO, Laboratoire de Catalyse en Chimie Organique, Poitiers, France
SYNTHESIS OF INORGANIC MATERIALS AND NANOMATERIALS Pr. Charles Kappenstein LACCO, Laboratoire de Catalyse en Chimie Organique, Poitiers, France Outline IV - FORMATION OF SOLIDS FROM SOLUTIONS 1) Glass
More informationPOSS for Surface Modification and and Corrosion Prevention
PSS for Surface Modification and and Corrosion Prevention Bill einerth Presented at the Nanostructured Chemicals Workshop September 7 th - 8 th, 2000 18237 Mount Baldy Circle Fountain Valley, CA 92708
More informationEffect of crystallinity on properties. Melting temperature. Melting temperature. Melting temperature. Why?
Effect of crystallinity on properties The morphology of most polymers is semi-crystalline. That is, they form mixtures of small crystals and amorphous material and melt over a range of temperature instead
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 informationPolymer Reaction Engineering
Polymer Reaction Engineering Polymerization Techniques Bulk Solution Suspension Emulsion Interfacial Polymerization Solid-State Gas-Phase Plasma Polymerization in Supercritical Fluids Bulk Polymerization
More informationChapter 5. Ionic Polymerization. Anionic.
Chapter 5. Ionic Polymerization. Anionic. Anionic Polymerization Dr. Houston S. Brown Lecturer of Chemistry UH-Downtown brownhs@uhd.edu What you should know: What is anionic polymerization? What is MWD,
More information2. Amorphous or Crystalline Structurally, polymers in the solid state may be amorphous or crystalline. When polymers are cooled from the molten state
2. Amorphous or Crystalline Structurally, polymers in the solid state may be amorphous or crystalline. When polymers are cooled from the molten state or concentrated from the solution, molecules are often
More information2.1 Traditional and modern applications of polymers. Soft and light materials good heat and electrical insulators
. Polymers.1. Traditional and modern applications.. From chemistry to statistical description.3. Polymer solutions and polymer blends.4. Amorphous polymers.5. The glass transition.6. Crystalline polymers.7.
More informationLiquid Crystal. Liquid Crystal. Liquid Crystal Polymers. Liquid Crystal. Orientation of molecules in the mesophase
Liquid Crystal - Liquid crystals (LCs) are a state of matter that have properties between those of a conventional liquid and those of a solid crystal. (Fourth state of matter) Liquid Crystal Orientation
More informationChem 634. Introduction to Transition Metal Catalysis. Reading: Heg Ch 1 2 CS-B 7.1, , 11.3 Grossman Ch 6
Chem 634 Introduction to Transition etal Catalysis eading: eg Ch 1 2 CS-B 7.1, 8.2 8.3, 11.3 Grossman Ch 6 Announcements Problem Set 1 due Thurs, 9/24 at beginning of class ffice our: Wed, 10:30-12, 220
More informationIII. Molecular Structure Chapter Molecular Size Size & Shape
III. Molecular Structure Chapter 3. 3. Molecular Size Size & Shape Molecular Structure (1)Molecular Size & Shape Size : molecular weight molecular weight distribution Shape : branching (2) Molecular Flexibility
More informationSolids. Adapted from a presentation by Dr. Schroeder, Wayne State University
Solids Adapted from a presentation by Dr. Schroeder, Wayne State University Properties of Solids Definite shape, definite volume Particles are CLOSE together, so Attractive forces (bonds or IMF s) are
More informationPreparation and Characterization of Organic/Inorganic Polymer Nanocomposites
Preparation and Characterization of rganic/inorganic Polymer Nanocomposites Proceedings of European Congress of Chemical Engineering (ECCE-6) Copenhagen, 16-20 September 2007 Preparation and Characterization
More informationSolutions and Ions. Pure Substances
Class #4 Solutions and Ions CHEM 107 L.S. Brown Texas A&M University Pure Substances Pure substance: described completely by a single chemical formula Fixed composition 1 Mixtures Combination of 2 or more
More informationChem Selected Aspects of Main Group Chemistry
Selected Aspects of Main Group Chemistry For the rest of the course, we will look at some aspects of the chemistry of main group compounds. The basic principles that you have learned concerning atoms,
More informationWhy study Carbon? Chemistry of Life. Chemistry of Life. Hydrocarbons can grow. Hydrocarbons. Building Blocks. Combinations of C & H
Chemistry of Life Building Blocks Why study Carbon? All of life is built on carbon Cells ~72% 2 O ~25% carbon compounds carbohydrates lipids proteins nucleic acids ~3% salts Na, Cl, K Chemistry of Life
More informationLecture 8. Polymers and Gels
Lecture 8 Polymers and Gels Variety of polymeric materials Polymer molecule made by repeating of covalently joint units. Many of physical properties of polymers have universal characteristic related to
More informationElectrochemistry. Part One: Introduction to Electrolysis and the Electrolysis of Molten Salts
Part One: Introduction to Electrolysis and the Electrolysis of Molten Salts What do I need to know about electrochemistry? Electrochemistry Learning Outcomes: Candidates should be able to: a) Describe
More informationPolymers in Modified Asphalt Robert Q. Kluttz KRATON Polymers
Polymers in Modified Asphalt Robert Q. Kluttz KRATON Polymers Polymers in Modified Asphalt Types of Polymers Compatibility of Polymers Effects of Polymers Analysis of polymers Recovery of PMA What Is a
More informationHomogeneous vs Heterogeneous Catalysts
Homogeneous vs Heterogeneous Catalysts Homogeneous Liquid phase Low temperature High selectivity High diffusivity Easy heat transfer Difficult catalyst separation Expensive recycling Well-defined active
More informationGroups elements. Trends in atomization energies
Groups 15-17 elements CHEM 102 T. Hughbanks Trends in atomization energies Explanation? Group 15 Elements Range from electronegative nitrogen to somewhat electropositive Bi Atomic configurations ns 2 np
More informationLecture 10. Membrane Separation Materials and Modules
ecture 10. Membrane Separation Materials and Modules Membrane Separation Types of Membrane Membrane Separation Operations - Microporous membrane - Dense membrane Membrane Materials Asymmetric Polymer Membrane
More informationNanoparticle-Doped Polydimethylsiloxane Elastomer Films
Nanoparticle-Doped Polydimethylsiloxane Elastomer Films DE VIG Jorge Pérez-Juste, Luis M. Liz-Marzán, Isabel Pastoriza-Santos Departamento de Química Física Universidade de Vigo utline DE VIG Some Properties
More informationNanocomposites Through in situ Polymerization Using. Yiyoung Choi, Sang Young A. Shin, João B.P. Soares IPR 2010
Preparation of Polyethylene/Montmorillonite (MMT) Nanocomposites Through in situ Polymerization Using a Montmorillonite-Supported Nickel Diimine Yiyoung Choi, Sang Young A. Shin, João B.P. Soares 1. Introduction
More informationPeriodic table with the elements associated with commercial polymers in color.
Polymers 1. What are polymers 2. Polymerization 3. Structure features of polymers 4. Thermoplastic polymers and thermosetting polymers 5. Additives 6. Polymer crystals 7. Mechanical properties of polymers
More informationCatalytic Chemistry. Bruce C. Gates. John Wiley & Sons, Inc. New York Chichester Brisbane Toronto Singapore. University of Delaware ^.'-'.
: s / ; '.... ;. : : ^.'-'. Catalytic Chemistry Bruce C. Gates University of Delaware John Wiley & Sons, Inc. New York Chichester Brisbane Toronto Singapore Contents List of Notation xix 1 INTRODUCTION
More informationMetallurgical and Materials Engineering Department MME 2509 Materials Processing Laboratory SOL-GEL DIP COATING
Metallurgical and Materials Engineering Department MME 2509 Materials Processing Laboratory SOL-GEL DIP COATING Assist. Prof. Dr. Tolga TAVŞANOĞLU 1. Sol-gel Process Sol-gel process is used for production
More information7. Relax and do well.
CHEM 1215 Exam II John II. Gelder October 7, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility
More information3.5 Production and modification of nanoparticles
51 Along with the surface effects, nanoparticles in particular offer the possibility of integrating additional effects into the coating systems. In the next chapter, we will address the manufacture, manipulation,
More informationCHEMISTRY Ch. 14 Notes: Mixtures and Solutions NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics.
CHEMISTRY Ch. 14 Notes: Mixtures and Solutions NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics. 14.1 notes I. Types of mixtures (mixture a physical blend of substances)
More informationPhysical Chemistry of Polymers (4)
Physical Chemistry of Polymers (4) Dr. Z. Maghsoud CONCENTRATED SOLUTIONS, PHASE SEPARATION BEHAVIOR, AND DIFFUSION A wide range of modern research as well as a variety of engineering applications exist
More informationChapter 2 Organic Inorganic Polymer Hybrids: Synthetic Strategies and Applications
Chapter 2 rganic Inorganic Polymer Hybrids: Synthetic Strategies and Applications Theodora Krasia-Christoforou Abstract Hybrid materials generated via the combination of functional polymers with inorganic
More informationMetals - Homework solutions
Metals - Homework solutions Q Ex 1,2,3,6,8,10,12,13,14,17,20 and Prob. 8 8.1 a) Melting point decreases down the groups Melting point increases on going left to right b) The radii increase on going down
More informationCoating of Tetraethylorthosilicate (TEOS)/Vinyltriethoxysilane (VTES) Hybrid Solution on Polymer Films
Journal of Sol-Gel Science and Technology 13, 409 413 (1998) c 1998 Kluwer Academic Publishers. Manufactured in The Netherlands. Coating of Tetraethylorthosilicate (TEOS)/Vinyltriethoxysilane (VTES) Hybrid
More informationInsertion and elimination. Peter H.M. Budzelaar
Peter H.. Budzelaar Insertion reactions If at a metal centre you have a) a σ-bound group (hydride, alkyl, aryl) b) a ligand containing a π-system (olefin, alkyne, C) the σ-bound group can migrate to the
More informationSolutions for Assignment-8
Solutions for Assignment-8 Q1. The process of adding impurities to a pure semiconductor is called: [1] (a) Mixing (b) Doping (c) Diffusing (d) None of the above In semiconductor production, doping intentionally
More informationSteric stabilization. Dispersions in liquids: suspensions, emulsions, and foams ACS National Meeting April 9 10, 2008 New Orleans
Steric stabilization Dispersions in liquids: suspensions, emulsions, and foams ACS National Meeting April 9 10, 2008 New Orleans Rates of flocculation Strength of interparticle forces The time for half
More informationmaterials and their properties
materials and their properties macroscopic properties phase state strength / stiffness electrical conductivity chemical properties color / transparence spectroscopical properties surface properties density
More informationSol-Gel Methods. Hydrolysis Condensation Gelation Ageing Drying Densification
Sol-Gel Methods Sol-gel process: Hydrolysis Condensation Gelation Ageing Drying Densification Powders: microcrystalline, nanocrystalline, amorphous Monoliths, Coatings, Films, Fibers Aerogels Glasses,
More informationAcids. Lewis Acids and Bases. Lewis Acids. Lewis acids: H + Cu 2+ Al 3+ E5 Lewis Acids and Bases (Session 1) March 19-24
E5 Lewis Acids and Bases (Session 1) March 19-24 Session one Pre-lab (p.151) due 1st hour discussion of E4 Lab (Parts 1and 2A) Session two Lab: Parts 2B, 3 and 4 Acids Bronsted: Acids are proton donors.
More informationLecture 8 Polymers and Gels
Lecture 8 Polymers and Gels Variety of polymeric materials Polymer molecule made by repeating of covalently joint units. Living polymers (not considered in this lecture) long-chain objects connected by
More informationAngel International SchoolManipay
Grade OL Angel International SchoolManipay 2 nd Term Examination March, 2016 Chemistry Duration: 3 Hours 1. Which property is common to calcium, potassium and sodium? a) Their atoms all lose two electrons
More informationExperiment Three. Lab two: Parts 2B and 3. Halogens used in Parts 2 and 3. Lab one: Parts 1 and 2A. Halogens (Family VIIA) used in Parts 2 and 3
Experiment Three Lab one: Parts 1 and 2A Lab two: Parts 2B and 3 1 1A 1 H 1s 1 2 IIA 3 Li 2s 1 1 1 Na 3s 1 1 9 K 4s 1 3 7 Rb 5s 1 5 5 Cs 6s 1 8 7 Fr 7s 1 4 Be 2s 2 1 2 Mg 3s 2 3 IIIB 4 IVB 5 VB 6 VIB 7
More informationChapter 5. Chemical reactions
Chapter 5 Chemical reactions Chemical equations CaO(s) + CO 2 (g) CaCO 3 (s) + CO(g) Chemical equation - representation of a chemical reaction; uses the symbols of the elements and formulae of the compounds
More informationJahresbericht 2003 der Arbeitsgruppe Experimentalphysik Prof. Dr. Michael Farle
olloidal Synthesis of Magnetic Nanoparticles V. Salgueirino Maceira and M. Farle 1 Institut für Physik, Universität Duisburg-Essen, Lotharstr. 1, 47048 Duisburg 1. Introduction 1 The synthesis of monodisperse
More informationMATERIALS SCIENCE POLYMERS
POLYMERS 1) Types of Polymer (a) Plastic Possibly the largest number of different polymeric materials come under the plastic classification. Polyethylene, polypropylene, polyvinyl chloride, polystyrene,
More informationSupporting Information
Supporting Information Dynamic Nuclear Polarization of Spherical Nanoparticles Ümit Akbey 1 *, Burcu Altin 2, Arne Linden 1, Serdar Özcelik 3, Michael Gradzielski 2, Hartmut Oschkinat 1 1 Leibniz-Institut
More informationIntroduction to Engineering Materials ENGR2000 Chapter 14: Polymer Structures. Dr. Coates
Introduction to Engineering Materials ENGR2000 Chapter 14: Polymer Structures Dr. Coates 14.1 Introduction Naturally occurring polymers Wood, rubber, cotton, wool, leather, silk Synthetic polymers Plastics,
More informationModeling of Electrochemical Cells: HYD Lecture 08. Composite Membranes
Modeling of Electrochemical Cells: Proton Exchange Membrane Fuel Cells HYD7007 01 Lecture 08. Composite Membranes Dept. of Chemical & Biomolecular Engineering Yonsei University Spring, 2011 Prof. David
More informationCERAMIC MATERIALS I. Asst. Prof. Dr. Ayşe KALEMTAŞ. Office Hours: Wenesday, 09:30-10:30 am.
CERAMIC MATERIALS I Office Hours: Wenesday, 09:30-10:30 am. akalemtas@mu.edu.tr, akalemtas@gmail.com, Phone: 211 19 17 Metallurgical and Materials Engineering Department Liquid Phase Synthesis Fine Ceramic
More informationMacromers and Monofunctional Silicones
Macromers and Monofunctional Silicones Macromers are relatively high molecular weight species with a single functional polymerizeable group which, although used as monomers, have high enough molecular
More informationSteric stabilization i the role of polymers
Steric stabilization i the role of polymers Dispersions in liquids: suspensions, emulsions, and foams ACS National Meeting March 21 22, 2009 Salt Lake City Ian Morrison 2009 Ian Morrison 2009 Lecture 4
More informationHow Silica Aerogels Are Made
Page 1 of 7 How Silica Aerogels Are Made Back to the Table of Contents The discussion below relies upon the following terms: Hydrolysis: The reaction of a metal alkoxide (M-OR) with water, forming a metal
More informationLecture 21 Cations, Anions and Hydrolysis in Water:
2P32 Principles of Inorganic Chemistry Dr. M. Pilkington Lecture 21 Cations, Anions and ydrolysis in Water: 1. ydration.energy 2. ydrolysis of metal cations 3. Categories of acidity and observable behavior
More informationIntroduction to Macromolecular Chemistry
Introduction to Macromolecular Chemistry aka polymer chemistry Mondays, 8.15-9.45 am except for the following dates: 01.+29.05, 05.+12.06., 03.07. Dr. Christian Merten, Ruhr-Uni Bochum, 2017 www.ruhr-uni-bochum.de/chirality
More informationEncapsulation. Battelle Technology. Introduction
Encapsulation Introduction The encapsulation methods reported in the literature 1-7 for the production of microcapsules are generally achieved using one of the following techniques: 1. Phase separation
More informationLecture 19 Hydrogen and Hydrides.
2P32 Principles of Inorganic Chemistry Dr. M. Pilkington Lecture 19 ydrogen and ydrides. 1. Properties of hydrogen and its position in the periodic table. 2. ydrides 3. ydrogen bonding and the structure
More informationPolypropylene. Monomer. mer
Polymer Polymer: Maromolecule built-up by the linking together of a large no. of small molecules Ex. Nucleic acid, paper, bakelite,pvc Monomer: The small molecule which combine with each other Mer: The
More informationHonors text: Ch 10 & 12 Unit 06 Notes: Balancing Chemical Equations
Notes: Balancing Chemical Equations Effects of chemical reactions: Chemical reactions rearrange atoms in the reactants to form new products. The identities and properties of the products are completely
More informationCHAPTER Describing Chemical Reactions Reactants Products. New substances produced The arrow means yields TYPES OF EQUATIONS.
CHAPTER 11 Chemical Reactions 11.1 Describing Chemical Reactions Reactants Products New substances produced The arrow means yields Where do Chemical Reactions occur? Everywhere!!! In living organisms In
More informationFabrication of SiO 2, Al 2 O 3, and TiO 2 Microcapsules with Hollow Core and Mesoporous Shell Structure
Fabrication of SiO 2, Al 2 O 3, and TiO 2 Microcapsules with Hollow Core and Mesoporous Shell Structure Xiao-Feng Guo, Yong-Suk Kim, and Geon-Joong Kim Department of Chemical Engineering, Inha UniVersity,
More informationProperties of Solutions. Review
Properties of Solutions Review Matter Pure substance Mixture of substances compound element homogeneous heterogeneous Solution Definitions A solution is a homogeneous mixture of two or more substances.
More informationEffect of Metal Concentration on Shape and Composition Changes in Gold-Silver Bimetallic Systems Md. Jahangir Alam
Noto-are 15542466: Chemical technology. 2013-07-15. Effect of Metal Concentration on Shape and Composition Changes in Gold-Silver Bimetallic Systems Md. Jahangir Alam Department of Agronomy and Agricultural
More informationMetal Structure. Chromium, Iron, Molybdenum, Tungsten Face-centered cubic (FCC)
Metal Structure Atoms held together by metallic bonding Crystalline structures in the solid state, almost without exception BCC, FCC, or HCP unit cells Bodycentered cubic (BCC) Chromium, Iron, Molybdenum,
More informationJahn-Teller Distortions
Selections from Chapters 9 & 16 The transition metals (IV) CHEM 62 Monday, November 22 T. Hughbanks Jahn-Teller Distortions Jahn-Teller Theorem: Nonlinear Molecules in orbitally degenerate states are inherently
More informationIntroduction to Synthetic Methods in Step-Growth Polymers 1.1 INTRODUCTION Historical Perspective Some of the earliest useful polymeric
Synthetics Polymers Introduction to Synthetic Methods in Step-Growth Polymers 1.1 INTRODUCTION 1.1.1 Historical Perspective Some of the earliest useful polymeric materials, the Bakelite resins formed from
More informationPOLYMERS: CHEMISTRY AND PHYSICS OF MODERN MATERIALS
POLYMERS: CHEMISTRY AND PHYSICS OF MODERN MATERIALS THIRD EDITION J.M.G. COWIE Heriot-Watt University Scotland,UK VALERIA ARRIGHI Heriot-Watt University Scotland,UK Contents Preface The Authors xv xvii
More informationPaper Reference. London Examinations IGCSE. Foundation Tier. Tuesday 10 November 2009 Afternoon Time: 1 hour 30 minutes
Centre No. Candidate No. Paper Reference(s) 4335/1F London Examinations IGCSE Chemistry Paper 1F Foundation Tier Tuesday 10 November 2009 Afternoon Time: 1 hour 30 minutes Materials required for examination
More informationAppendix A. Assessments Points 4 Mode of Assessments. New Course Code and Title Course Coordinator. MS741M Nanomaterials
New Course Code and Title Course Coordinator Details of Course MS741M Nanomaterials AP Jason Xu (Course Coordinator) AP Xue Can Rationale for introducing this course This course will cover the subject
More informationPOLYMER SCIENCE : lecture 1. Dr. Hanaa J. Alshimary Second class Poly. Eng. Dep. Introduction of Polymers Polymer poly mer Monomer Polymerization
Introduction of Polymers Polymer - The word polymer is the Greek word : poly means many and mer means unit or parts, A Polymer is a large molecule that comprises repeating structural units joined by the
More informationAtoms, the basic building block of matter, are composed of three basic particles. Nucleus: Proton (+) Neutron (-) Outside the nucleus: Electron (-)
Atoms, the basic building block of matter, are composed of three basic particles Nucleus: Proton (+) Neutron (-) Outside the nucleus: Electron (-) Atomic number = # protons Atomic mass number = # protons
More informationThree (3) (Qatar only) The expected learning outcome is that the student will be able to:
Course Information for 2014-2015 COURSE NUMBER: COURSE TITLE: CH1120 Chemistry COURSE DESCRIPTION: This in an introductory course designed to give students knowledge and understanding of the fundamental
More informationJulien Schmitt, postdoc in the Physical Chemistry department. Internship 2010: Study of the SAXS scattering pattern of mesoporous materials
Before starting Julien Schmitt, postdoc in the Physical Chemistry department Internship 2010: Study of the SAXS scattering pattern of mesoporous materials PhD 2011-2014: Self-assembly mechanism of mesoporous
More informationCONTROL OF THE INTERPHASE INTERACTION AND MORPHOLOGY IN THE ORGANIC-INORGANIC POLYMER NANOCOMPOSITES
CNTL F THE INTEPHASE INTEACTIN AND MPHLGY IN THE GANIC-INGANIC PLYME NANCMPSITES P. Murias, L. Matějka Institute of Macromolecular Chemistry, Academy of Sciences of the Czech epublic, Heyrovsky Sq.2, 162
More informationPaul Rempp and Edward W. Merrill. Polymer Synthesis. 2nd, revised Edition. Hüthig & Wepf Verlag Basel Heidelberg New York
Paul Rempp and Edward W. Merrill Polymer Synthesis 2nd, revised Edition Hüthig & Wepf Verlag Basel Heidelberg New York Table of Contents Part I: Polymerization Reactions Chapter 1: General Considerations
More informationMicrostructured Porous Silica Obtained via Colloidal Crystal Templates
Paper No. 203e Microstructured Porous Silica Obtained via Colloidal Crystal Templates O. D. Velev, T. A. Jede, R. F. Lobo and A. M. Lenhoff Department of Chemical Engineering, University of Delaware, Newark
More information7.01 Chemical Reactions
7.01 Chemical Reactions The Law of Conservation of Mass Dr. Fred Omega Garces Chemistry 152 Miramar College 1 Chemical Reactions Making Substances Chemical Reactions; the heart of chemistry is the chemical
More informationFinal Exam Introduction to Polymers (each part, a,b,c,, is worth 2.2 points)
168 Final Exam Introduction to Polymers (each part, a,b,c,, is worth 2.2 points) 1) Polymers are different than low-molecular weight oligomers. For example an oligomeric polyethylene is wax, oligomeric
More information5.03, Inorganic Chemistry Prof. Daniel G. Nocera Lecture 4 Apr 11: Bent Metallocenes and Ziegler Natta Catalysis
5.03, Inorganic hemistry Prof. Daniel G. Nocera Lecture 4 Apr 11: Bent Metallocenes and Ziegler Natta atalysis The electronic structure of organometallic complexes follows directly from the sandwich compounds
More informationBiodegradable Solid Polymeric Materials (continued)
Biodegradable Solid Polymeric Materials (continued) Last time: chemistry and physical chemistry of degrading polymeric solids for biomaterials Today: Factors controlling polymer degradation rates Theory
More information7. Relax and do well.
CHEM 1215 Exam II John II. Gelder October 7, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility
More informationElectrophoretic Deposition. - process in which particles, suspended in a liquid medium, migrate in an electric field and deposit on an electrode
Electrophoretic Deposition - process in which particles, suspended in a liquid medium, migrate in an electric field and deposit on an electrode no redox differs from electrolytic in several ways deposit
More informationChemistry 31A Autumn 2004 Professors Chidsey & Zare Exam 2 Name:
Chemistry 31A Autumn 2004 Professors Chidsey & Zare Exam 2 Name: SUNetID: @stanford.edu Honor Code Observed: (Signature) Circle your section 9:00am 10:00am 2:15pm 3:15pm 7:00pm 8:00pm S02 OC103 S04 OC103
More informationRadical Initiation 2017/2/ ) Thermal Decomposition of Initiators
adical Initiation Production of radicals (from initiator) to initiate chain polymerization. A variety of initiator systems can be used to bring about the radical polymerization. 1) Thermal Decomposition
More information