(c) Dr. Payal B. Joshi
|
|
|
- Sophie O’Brien’
- 5 years ago
- Views:
Transcription
1
2
3 Polymer (Greek: poly=many; mer=part) Made up of large molecules characterized by repeating units called monomers held together by covalent bonds
4 Functionality To act as monomer, it must have at least two reactive sites/bonding sites Number of bonding sites in a monomer is called functionality
5 Polymerization Fundamental process in which low molecular weight compounds combine to form macromolecules of high molecular weight
6 Mechanism Initiation: Free radicals formed from H 2 O 2 through the addition of heat Free radical acts to open the C=C double bond by joining to one side of the monomer. This allows the monomers to react with other open monomers on their other side.
7 Propagation: Process continues with successive addition of monomer units to the chains Termination: Through a combination of two chains
8 Degree of Polymerization Number of repeating units in the chain is called the degree of polymerization (n). Polyethene: (C 2 H 4 ) n, where n stands for DP Molecular weight of PE, M = nmo, where Mo is molecular weight of monomer Strength of the polymer can be increased by increasing its DP
9 Data: If MW of PE, M = 28000, MW of repeat unit, Mo = 28, Calculate DP??? M = nmo Thus, n = M/Mo = 28000/28 = 1000 Degree of Polymerization (n) = 1000
10 Addition Polymerization It yields product that is an exact multiple of the original monomer unit Polyethene (PE)
11 Condensation/Step Polymerization Formation of polymers from polyfunctional monomers of organic molecules with elimination of small molecules like water, HCl, ammonia Functional group of one monomer unit reacts with functional group of the other
12 Copolymerization Specific type of addition polymerisation Monomers of more than one type are involved thereby giving variety of polymers Eg. Styrene-Butadiene rubber (Buna-S)
13 Tacticity: Orientation of monomeric units in polymer takes place in orderly/disorderly fashion w.r.t main chain Isotactic: Functional groups are all on the same side of the main chain
14 Syndiotactic: Functional groups occupy alternating position. Atactic: Functional groups arranged in random manner
15 Melting and Glass transition temperatures Hard, brittle glass-like cooling Polymer heat Fluid Tg, Lower T Increasing Temperature Tm Lowest temperature beyond which polymer becomes hard, brittle, glass-like (Tg) Temperature above which it turns out to be flexible, elastic and rubbery (Tm)
16
17 Significance Tg and Tm are significant parameters Gives an indication of the temperature region at which a polymeric material transforms from a rigid solid to a soft viscous state Helps in choosing the right processing temperature in which materials are converted into finished products
18 Factors affecting Tg Tg is directly proportional to the molecular weight of the polymer. Greater the degree of cross-linking, higher the Tg. Polymers with strong intermolecular forces of attraction have greater Tg. Side groups, especially benzene and aromatic groups attached to main chain increases Tg.
19 Plastics ThermoPlastics/Thermosoftening Polymers Some polymers when heated become soft and can be moulded into any shape that can retain on cooling PVC, PE Thermosetting polymers On heating, polymers undergo a chemical change and become an infusible mass which cannot be reshaped Egg, polyester, resins
20 Thermoplastic polymers They soften on heating and harden on cooling Can be reshaped and recycled Formed by addition polymerization Linear in structure They are soluble in some organic solvents Moulded articles are taken out after cooling the mould to avoid deformation of the article Thermosetting polymers They are fusible on initial heating, but turn into hard infusible mass on heating further Cannot be reshaped and recycled Formed by condensation polymerization Three dimensional in structure Insoluble in organic solvents Moulded articles are taken out from the mould even when they are hot.
21 Compounding of Plastics Unusual for a finished high polymeric articles to solely consist of high polymers alone Mixed with ingredients known as additives resulting in useful functions and imparts useful properties to the finished products Main types of compounding ingredients are Resin: Binder, which holds different constituents/additives together. Natural or synthetic resins used in this case Plasticizers: Low MW organic liquids added to polymer to improve its flexibility; Added 8-10% of total bulk of plastics (oils, camphor, dioctyl phthalates)
22 Stabilizers: Most polymers do not possess chemical stability change colors & decompose Stabilizers are additives which chemically stabilize the polymer and thus arrest degradation Organic, inorganic, organometallic compounds like CaO, BaO, Organo-tin compounds Fillers/Extenders: Inert material added to enhance mechanical strength-- asbestos powder, saw dust, cotton pulp, clay, etc Lubricants: Glossy finish to product, Prevents plastics from sticking to fabrication equipments; oils, waxes, soaps, etc
23 Catalysts Antioxidants like H 2 O 2, benzoyl peroxide, ZnO, NH 3, Ag, Pb, are added to the polymeric matrix to accelerate the cross linking in thermosetting plastics while moulding process Coloring materials Organic dyes and pigments impart desired color for aesthetic appeal of the finished polymeric material. Some colors are added to impart UV protection to the finished products.
24 Preparation, Properties and Uses of Commercial Plastics
25 Phenol Formaldehyde Resin
26
27 Properties and Uses Phenolic resins are rigid, hard, water resistant Resistant to acids, salts, organic solvents Easily attacked by alkalies due to the presence of free hydroxy groups Possess electrical insulating properties due to low thermal conductivity Uses: Used to fabricate insulators, plugs, switches Used as cation-exchanger resin in water softening Adhesives in paints and varnishes Propellar shafts for paper industry and mills
28 Polymethyl Methacrylate O CH 3 n(- CH 3 H 2 C Polymerisation Catalyst CH 2 C O C CH 3 n O O CH 3 PMMA Methyl methacrylate
29 Properties and Uses Also known as plexiglass Transparent, colorless plastic Easy to mould Used to fabricate artificial eyes (cosmetic surgery), bone splints, dentures, TV screens, aircrafts, adhesives, paints.
30
Polymers Contents: Plastics: Elastomers: Speciality polymers: Introduction: Monomer Polymerization:
Polymers Contents: Introduction and definition of important terms monomer, polymer, polymerization, degree of polymerization, tacticity, and melting-glass transition temperature. Plastics: Thermosetting
Polypropylene. 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
Lecture 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
POLYMER 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
Polymers are high molecular mass macromolecules composed of repeating structural
Question 15.1: Explain the terms polymer and monomer. Polymers are high molecular mass macromolecules composed of repeating structural units derived from monomers. Polymers have a high molecular mass (10
The functionality of a monomer is the number of binding sites that is/are present in that monomer.
Question 15.1: Explain the terms polymer and monomer. Polymers are high molecular mass macromolecules composed of repeating structural units derived from monomers. Polymers have a high molecular mass (10
Thermoplastic. Condensation. Homopolymer. Polymer POLYMERS. Synthetic. Natural. Addition. Copolymer. Polymer. Thermosetting
Thermoplastic Homopolymer Condensation Polymer Natural POLYMERS Synthetic Addition Polymer Copolymer Thermosetting Polymers are very large covalent molecular substances containing tens of thousands of
Downloaded from Unit - 15 POLYMERS. Points to Remember
Unit - 15 POLYMERS Points to Remember 1. Polymers are defined as high molecular mass macromolecules which consist of repeating structural units derived from the appropriate monomers. 2. In presence of
Top concepts Chapter : Polymers 1. Polymers are high molecular mass substance consisting of large number of repeating structural units. As polymers are single, giant molecules i.e. big size molecules,
SCH4U Synthesis and Polymers. Synthesis Reactions and Addition and Condensation Polymers
SCH4U Synthesis and Polymers Synthesis Reactions and Addition and Condensation Polymers ADDITION POLYMERS ADDITION POLYMERS A + A + A + A A A A A monomers polymer + + + ethylene (ethene) polyethylene
2. 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
POLYMER 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
Chemistry Class 12 th NCERT Solutions
This e-book is prepared by the CBSE board exam experts of jagranjosh.com, an online educational portal of Dainik Jagran. The purpose of providing solutions for CBSE class 12 th Science and Mathematics
TOPIC 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.
Chapter : 15. POLYMERS. Level-1:Questions
1) What are polymers? Chapter : 15. POLYMERS Level-1:Questions A: These are referred to as Macromolecules which are formed by joining of repeating structural units on a large scale. 2) Give two examples
MATERIALS 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,
Polymers and Composite Materials
Polymers and omposite Materials Shibu G. Pillai hemical Engineering Department shibu.pillai@nirmauni.ac.in ontents lassification of Polymers Types of polymerization Elastomers/ Rubber Advanced Polymeric
Unit - 15 POLYMERS Points to Remember 1. Polymers are defined as high molecular mass macromolecules which consist of repeating structural units derived from the appropriate monomers. 2. In presence of
not to be republished NCERT Unit I. Multiple Choice Questions (Type-I) 1. Which of the following polymers of glucose is stored by animals?
I. Multiple Choice Questions (Type-I) 1. Which of the following polymers of glucose is stored by animals? Cellulose Amylose Amylopectin Glycogen 2. Which of the following is not a semisynthetic polymer?
Polymer Reaction Engineering
Polymer Reaction Engineering Polymerization Techniques Bulk Solution Suspension Emulsion Interfacial Polymerization Solid-State Gas-Phase Plasma Polymerization in Supercritical Fluids Bulk Polymerization
Chapter 11. Polymer Structures. Natural vs man-made
. Polymer Structures Polymers: materials consisting of long molecules - the word polymer comes from the Greek Polys = many Meros = parts Macromolecules (long size of the chains) many parts - typically,
Periodic 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
POLYMERS: MACROMOLECULES
C21 11/08/2013 16:8:37 Page 311 CHAPTER 21 POLYMERS: MACROMOLECULES SOLUTIONS TO REVIEW QUESTIONS 1. An addition polymer is one that is produced by the successive addition of repeating monomer molecules.
Chapter 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
Introduction 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,
Electronic materials and components-polymer types
Introduction Electronic materials and components-polymer types Polymer science is a broad field that includes many types of materials which incorporate long chain structures with many repeated units. One
Unit title: Polymer Chemistry
Unit title: Polymer Chemistry Unit code: L/601/0415 QCF level: 5 Credit value: 15 Aim This unit enables learners to gain an understanding of aspects of the structure, reaction mechanisms and polymer preparations.
1.1 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 =
SRI DEVI LIQUIDS. (A Unit of Sri Devi Group) Product: CNSL
TECHNICAL DATE SHEET (TDS) Introduction Cashew nut shell liquid (CNSL) is one of the sources of naturally occurring phenols. It is obtained from the shell of a cashew nut. About 30-35% CNSL is present
Experiment 5. Synthetic Polymers.
Experiment 5. Synthetic Polymers. References: Brown & Foote, Chapters 24 INTRODUCTION: A polymer (Greek: polys + meros = many parts) is a giant or macromolecule made up of repeating structural units. The
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
Polymers 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
Engineering Materials
Engineering Materials A polymer is a large molecule composed of repeating structural units. poly- The word polymer is derived from the Greek words meaning "many"; and - meros meaning "part". Plastic and
Effect 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
Plastics are synthetic substances that can be moulded (often under heat and pressure) and retain the shape they are moulded into.
5.7: Polymers Plastics are synthetic substances that can be moulded (often under heat and pressure) and retain the shape they are moulded into. Polymers are large molecules that are made by linking together
Combustion and thermal degradation of polymers
Polymers and biomaterials - laboratory Combustion and thermal degradation of polymers Theoretical background dr Hanna Wilczura-Wachnik University of Warsaw Faculty of Chemistry Chemical Technology Division
Materials of Engineering ENGR 151 POLYMER STRUCTURES
Materials of Engineering ENGR 151 POLYMER STRUCTURES LEARNING OBJECTIVES Understand different molecular and crystal structures of polymers What are the general structural and chemical characteristics of
Chemistry Notes. Daniel P
Chemistry Notes Daniel P Contents 1 Introduction 3 2 Production of Materials 4 2.1 Ethylene and its Uses...................................... 4 1. Chemical Equations...................................
III. 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
Year 12 Chemistry Tutorial 9.2.A Synthetic Polymers
Year 12 Chemistry Tutorial 9.2.A Synthetic Polymers Module Topic 9.2 Production of Materials 9.2.A Synthetic Polymers Name Date Ethene 1. Match the statement on the left with the most appropriate answer
CH 2 = CH - CH =CH 2
MULTIPLE CHOICE QUESTIONS 1. Styrene is almost a unique monomer, in that it can be polymerized by practically all methods of chain polymerization. A. Free radical B. Anionic C. Cationic D. Co-ordination
Anionic Polymerization - Initiation and Propagation
Anionic Polymerization Initiation and Propagation As in free radical polymerization, there are initiation and propagation steps. NH 2 NaNH 2 Na + + NH 2 + H 2 N CH: Propagation proceeds in the usual manner,
Covalent Compounds 1 of 30 Boardworks Ltd 2016
Covalent Compounds 1 of 30 Boardworks Ltd 2016 Covalent Compounds 2 of 30 Boardworks Ltd 2016 What are covalent bonds? 3 of 30 Boardworks Ltd 2016 When atoms share pairs of electrons, they form covalent
POLYMER CHEMISTRY Lecture/Lession Plan -4
Chapter 6 POLYMER CHEMISTRY Lecture/Lession Plan -4 POLYMER CHEMISTRY 6.1 Rubber Rubber is a natural elastomeric polymer whose monomer unit is cis-2-methyle-1,3-butadiene. Raw rubber material is extracted
(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
Note: Brief explanation should be no more than 2 sentences.
Her \Hmher UNIVERSITY OF TORONTO FACULTY OF APPLIED SCIENCE AND ENGINEERING FINAL EXAMINATION, April 26, 2017 DURATION: 2 and /2 hrs MSE245 - HiS - Second Year - MSE Organic Material Chemistry & Processing
2A - Amines. 2 H atoms replaced: 2 attached C's to N. 3 H atom replaced: 3 attached C's to N Ammonia, NH3 Primary amine Secondary amine Tertiary amine
2A - Amines Something fishy about amines: Have an NH 2, amine group. Amines are derivatives of ammonia: 3 H atoms 1 H atom replaced: 1 attached C to N 2 H atoms replaced: 2 attached C's to N 3 H atom replaced:
Downloaded from Polymer. (one mark questions Q1 to Q20)
Polymer (one mark questions Q1 to Q20) Q1.Give the name and structure of reagent used for initiating a free radical chain reaction. Ans: Name- benzoylperoxide,c 6H 5-CO-O-O-CO-H 5C 6 Q2.Classify them as
2011 ENGINEERING CHEMISTRY - II
Set No. 1 1. (a) with suitable examples explain addition polymerization, condensation polymerization and co-polymerization. (b) Give a brief account of conducting polymers. (c) Write the preparation, properties
Macromolecular Chemistry
Macromolecular Chemistry Lecture 5 Step Growth Chain Growth Paul Flory Clears Things Up Polymer Structure is distinct from polymerization process Addition Polymerization H H Condensation Polymerization
1 P a g e h t t p s : / / w w w. c i e n o t e s. c o m / Chemistry (A-level)
1 P a g e h t t p s : / / w w w. c i e n o t e s. c o m / Electrophoresis (Chapter 27): Chemistry (A-level) Electrophoresis: the separation of charged particles by their different rates of movement in
A polymer is a very large molecule that is built from monomers. A monomer is one of the repeating units that make up a polymer.
1.8 Polymers The General Structure of Polymers A polymer is a very large molecule that is built from monomers. A monomer is one of the repeating units that make up a polymer. Many biological molecules,
CHAPTER 2 SYNTHESIS OF DYE DOPED POLYMER RODS AND FILMS
39 CHAPTER 2 SYNTHESIS OF DYE DOPED POLYMER RODS AND FILMS 2.1 INTRODUCTION Polymers are long chain organic materials or macro molecules having carbon as a common element in their structure. The repeating
1.3) Plastics Advantages and disadvantages Thermoplastics and thermosetting plastics.
CY6151 ENGINEERING CHEMISTRY I UNIT 1 POLYMER SCIENCE LECTURE PLAN 1.1-A) Polymerization Introduction. 1.1-B) Functionality Definition Significance 1.1-C) Tacticity Isotactic, Syndiotactic and atactic.
Chapter 7 Solid Surface
Chapter 7 Solid Surface Definition of solid : A matter that is rigid and resists stress. Difference between solid and liquid surface : Liquid : always in equilibrium and equipotential. (Fig 7.1a,b) Solid
STANDARD GRADE CHEMISTRY : GENERAL LEVEL
STANDARD GRADE CHEMISTRY : GENERAL LEVEL NEED TO KNOW SHEETS (BASED ON 1998 2006 EXAMS) TOPIC NO 1 -ide means two elements only ate/-ite means two elements + oxygen a solution contains a solid (solute)
Polymer Systems and Film Formation Mechanisms in High Solids, Powder, and UV Cure Systems
Polymer Systems and Film Formation Mechanisms in High Solids, Powder, and UV Cure Systems J. Baghdachi, Ph.D. Coatings Research Institute Eastern Michigan University (734) 487-3192 Freshpaint@aol.com jamil.baghdachi@emich.edu
Polymer ~ a large molecule built up by the constitutional repeating units(structural units)
Polymer ~ a large molecule built up by the constitutional repeating units(structural units) Fundamental characteristics of polymers chemical structure and molecular mass distribution pattern ~ determine
Chapter 12 - Modern Materials
Chapter 12 - Modern Materials 12.1 Semiconductors Inorganic compounds that semiconduct tend to have chemical formulas related to Si and Ge valence electron count of four. Semiconductor conductivity can
Mechanical 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
A 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
for sodium ion (Na + )
3.4 Unit 2 Chemistry 2 Throughout this unit candidates will be expected to write word equations for reactions specified. Higher tier candidates will also be expected to write and balance symbol equations
Candidates Performance in Paper I (Q1 5) and II B
HKDSE 2014 Candidates Performance in Paper I (Q1 5) and II B 17, 21 November 2014 1 (a) Satisfactory About two thirds of the candidates could apply knowledge of bonding and structure of graphite to explain
1-8 DENTAL MATERIALS
1-8 DENTAL MATERIALS Dental materials NATURE OF DENTAL POLYMERS Nature of Dental Polymers Nature of Dental Polymers Polymer: Polymeric materials are formed of several large molecules (polymer chains) with
Molecular Geometry: VSEPR model stand for valence-shell electron-pair repulsion and predicts the 3D shape of molecules that are formed in bonding.
Molecular Geometry: VSEPR model stand for valence-shell electron-pair repulsion and predicts the 3D shape of molecules that are formed in bonding. Sigma and Pi Bonds: All single bonds are sigma(σ), that
Lecture 26 Classification
Lecture 26 Classification April 24, 2018 Industrial Influence: Trade Names PVC poly (vinylidene chloride) Saran wrap PVC poly (vinyl chloride) Pipe and records PET poly (ethylene teraphthalate) Coke bottles,
COMPOSITE MATERIALS. Asst. Prof. Dr. Ayşe KALEMTAŞ
COMPOSITE MATERIALS Office ours: Tuesday, 16:30-17:30 akalemtas@mu.edu.tr, akalemtas@gmail.com Phone: +90 252 211 19 17 Metallurgical and Materials Engineering Department ISSUES TO ADDRESS Polymers Applications
POLYMER STRUCTURES ISSUES TO ADDRESS...
POLYMER STRUTURES ISSUES TO ADDRESS... What are the basic microstructural features? ow are polymer properties effected by molecular weight? ow do polymeric crystals accommodate the polymer chain? Melting
Polystyrene. Erica Wilkes
Polystyrene Erica Wilkes Polystyrene is a polymer made from the synthetic aromatic monomer styrene. Styrene in turn comes from the catalytic dehydrogenation of ethylbenzene. Although ethylbenzene is found
Inorganic Material chemistry
Inorganic Material chemistry Silicone -Inorganic Polymer Polymer poly + mer many units Basic unit is called repeat unit (monomer) A polymer is a large molecule (macro molecule) composed of repeating structural
CHEMISTRY. Organic Polymer [Macromoleculers] weight and are made up of a great many simpler units identical to each other
![CHEMISTRY. Organic Polymer [Macromoleculers] weight and are made up of a great many simpler units identical to each other](/thumbs/91/105614595.jpg "CHEMISTRY. Organic Polymer [Macromoleculers] weight and are made up of a great many simpler units identical to each other")
1 EMISTRY rganic Polymer [Macromoleculers] By Dr. B.. Dixit. Definitions : (a) Monomer : The individual small molecules from which the polymer is formed are known as monomers. (b) Polymer : Polymers are
Experiment 26F FV 1/8/08 PREPARATION AND RECYCLING OF LINEAR AND CROSSLINKED POLYMERS
Experiment 26F FV 1/8/08 PREPARATIN AND REYLING F LINEAR AND RSSLINKED PLYMERS We gratefully acknowledge the United States Naval Academy for the use of this experiment MATERIALS: Resorcinol, 3 M Na, formalin,
This name hints at how polymers are made
Chapter- I Many + Parts This name hints at how polymers are made POLYMERS (the whole train) are made out of MONOMERS (individual cars of the train) joined together. repeat unit H H H H H H C C C C C
Liquid Polybutadienes and Derivatives
Liquid Polybutadienes and Derivatives Coatings & Colorants Product Range Our polyoils and derivatives are stereospecific, lowviscosity and unsaponifiable liquid polybutadienes having a high 1.4-cis double
UNIT 1 CHEMISTRY. How Can the Diversity of Materials Be Explained?
UNIT 1 CHEMISTRY How Can the Diversity of Materials Be Explained? AoS 1: How Can the Knowledge of Elements Explain the Properties of Matter? AoS 2: How Can the Versatility of Non-Metals be Explained? AoS
Introduction to Polymerization Processes
Introduction to Polymerization Processes Reference: Aspen Polymers: Unit Operations and Reaction Models, Aspen Technology, Inc., 2013. 1- Polymer Definition A polymer is a macromolecule made up of many
OCR A GCSE Chemistry. Topic 2: Elements, compounds and mixtures. Properties of materials. Notes.
OCR A GCSE Chemistry Topic 2: Elements, compounds and mixtures Properties of materials Notes C2.3a recall that carbon can form four covalent bonds C2.3b explain that the vast array of natural and synthetic
Standard Glossary of Packaging Inks and Coatings Terms
Standard Glossary of Packaging Inks and Coatings Terms 1 Acrylic binder Additive Basecoat Binder/ Vehicle Non-reactive Styrene-acrylate-copolymers or pure acrylate polymers as a resin solution in water
HIGHER 1 Polymers. Polymers are giant molecules made by linking together smaller molecules called monomers.
IGER 1 Polymers PLYMERS Polymers are giant molecules made by linking together smaller molecules called monomers. The reaction is called polymerisation. The linking can be done in two ways: by addition
Improving Adhesion: Examining the Electrochemistry of Organic Inhibitors
Improving Adhesion: Examining the Electrochemistry of rganic Inhibitors Benefits of rganics Chemisorb onto metallic substrates Complex with metal ions at substrate Neutralize & absorb the corrodents Decrease
C2 Quick Revision Questions. C2 for AQA GCSE examination 2018 onwards
C2 Quick Revision Questions Question 1... of 50 What are the 3 main types of chemical bond? Answer 1... of 50 Ionic, Covalent & Metallic. Question 2... of 50 What force bonds atoms in an ionic bond? Answer
Standard Glossary of Food Contact Material Inks and Coatings Terms
1 Standard Glossary of Food Contact Material Inks and Coatings Terms Acrylic binder Additive Basecoat Binder/ Vehicle Non-reactive Styrene-acrylate-copolymers or pure acrylate polymers as a resin solution
POLYMERS. The equations for polymerization are represented as below, where n stands for a large number.
POLYMERS Polymers are high molecular weight compounds in the range of 10 4-10 6, whose structures are composed of a large number of simple repeating units. The repeating units are usually referred to as
MSE 383, Unit 1-4. Joshua U. Otaigbe Iowa State University Materials Science & Engineering Dept.
Polymer Classifications Mole. Wt. MSE 383, Unit 1-4 Joshua U. Otaigbe Iowa State University Materials Science & Engineering Dept. Introduction Recall polymer (macromolecular) definition Covalent linkages
WJEC England GCSE Chemistry. Topic 5: Bonding, structure and properties. Notes. (Content in bold is for Higher Tier only)
WJEC England GCSE Chemistry Topic 5: Bonding, structure and properties Notes (Content in bold is for Higher Tier only) Chemical bonds Compounds - substances in which 2 or more elements are chemically combined.
Definition: A hydrocarbon is an organic compound which consists entirely of hydrogen and carbon.
Hydrocarbons Definition: A hydrocarbon is an organic compound which consists entirely of hydrogen and carbon. It is important to note that carbon atoms have 4 free bonds and that hydrogen has 1 free bond.
MECHANICAL PROPERTIES OF MATERIALS
1 MECHANICAL PROPERTIES OF MATERIALS Pressure in Solids: Pressure in Liquids: Pressure = force area (P = F A ) 1 Pressure = height density gravity (P = hρg) 2 Deriving Pressure in a Liquid Recall that:
AS Demonstrate understanding of the properties of selected organic compounds. Collated Polymer questions
AS 91165 Demonstrate understanding of the properties of selected organic compounds Collated Polymer questions (2017) (a) Polyvinyl chloride (polychloroethene) is often used to make artificial leather.
Thermal analysis unlocks the secrets of elastomers
4450 CR AN WO O D P AR K W AY C LEVELAN D, OH IO 44128 WW W. N SLAN ALYTICAL. C OM Thermal analysis unlocks the secrets of elastomers By Brian Bacher and Michael Walker, NSL Analytical Services, and Alan
Innovative. Technologies. Chemie des Klebens Chemistry of Adhesives. Dr. Jochen Stock, Laboratory Manager CRL Germany: Neuss, November 27 th, 2013
Chemie des Klebens Chemistry of Adhesives Dr. Jochen Stock, Laboratory Manager CRL Germany: Neuss, November 27 th, 2013 Innovative Technologies 1 Overview Chemie des Klebens Chemistry of Adhesives Introduction
Liquid 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
3. Polymers. On the basis of the structures, polymers can be classified into three groups.
By Dr.B.Rama devi, M,Sc., M.Phil., Ph.D. Department of chemistry, JNTUH-CEH, Hyderabad. 3. Polymers 1.What are polymers? What is polymerization? Give examples. Polymers are important engineering materials.
EL 3004 Material Biomedika Bab 22-23
BAB 22 EL 3004 Material Biomedika Bab 22-23 POLYMERS [Adopsi dari: Zbigniew D Jastrzebski, The Nature And Properties of Engineering Materials, John Wiley & Sons, ISBN 0-471-63693-2, 1987, CHAPTER 10.]
Physical and Mechanical Properties of Polymers
MATE 453/MSE 553 Physical and Mechanical Properties of Polymers Guided Lecture Notes for Fall 2012 Prof. Michael Kessler Department of Materials Science and Engineering Iowa State University PHYSICAL AND
Covalent Bonding 1 of 27 Boardworks Ltd 2016
Covalent Bonding 1 of 27 Boardworks Ltd 2016 Covalent Bonding 2 of 27 Boardworks Ltd 2016 Why do atoms form bonds? 3 of 40 Boardworks Ltd 2016 What is a covalent bond? 4 of 40 Boardworks Ltd 2016 Non-metal
Page 2. (polyethene) any four from:
M.(a) (ethene) (polyethene) (b) any four from: poly(ethene) produced by addition polymerisation whereas polyester by condensation polymerisation poly(ethene) produced from one monomer wheareas polyester
P O L Y M E R S. The Academic Support Daytona State College (Science 106, Page 1 of 25
P O L Y M E R S The Academic Support Center @ Daytona State College (Science 106, Page 1 of 25 POLYMERS Polymers are large, long-chain molecules. found in nature, including cellulose in plants, starches
Organic Chemistry. Radical Reactions
For updated version, please click on http://ocw.ump.edu.my Organic Chemistry Radical Reactions by Dr. Seema Zareen & Dr. Izan Izwan Misnon Faculty Industrial Science & Technology seema@ump.edu.my & iezwan@ump.edu.my
Chapter 23 Aldehydes and Ketones
Chapter 23 Aldehydes and Ketones Ketones are common solvents for quickdrying paints. Introduction to General, Organic, and Biochemistry, 10e John Wiley & Sons, Inc Morris Hein, Scott Pattison, and Susan
Chapter 12: Unsaturated Hydrocarbons
Chapter 12: Unsaturated Hydrocarbons UNSATURATED HYDROCARBONS contain carbon-carbon multiple bonds. Alkenes C=C double bonds Alkynes triple bonds Aromatics benzene rings 1 2 NAMING ALKENES Step 1: Name