1 Characterizing Molecular Weight Brazel & Rosen Ch. 5 Number average molecular weight: M n.

Slides:

Advertisements

Similar presentations

MOLAR MASS AND DEGREE OF POLYMERIZATION

Advertisements

Polymer Synthesis CHEM 421 Reading (Odian Book): Chapter 1.

CHE 333 Class 21 Polymers Reference W.D.Callister Materials Science and Engineering.

Metallic –Electropositive: give up electrons Ionic –Electronegative/Electropositive Colavent –Electronegative: want electrons –Shared electrons along bond.

Polymer Chemistry CHEM 3430.

2. Solubility and Molecular Weights Polymer Solubility1.

4 th edition L. H. Sperling ISBN X Part 1. Introduction to Polymer Science Midterm + Final50 % Quizzes50 %

CHEM 210 SPRING 2014 DR. VILCHIZ POLYMERS. Brief History Ca BC Earliest known polymer work  Pre-Columbian Mexico’s rubber industry  Latex from.

Polymer Synthesis CHEM 421 Polycarbonates: Interfacial Polymerizations Commercially Important Commercially Important Brunelle, D. J. Am. Chem. Soc., 1990,

14.1 Introduction Schematic & Perspective Representation of Polyethylene Molecule.

1 Polymers Macromolecule that is formed by linking of repeating units through covalent bonds in the main backbone Properties are determined by molecular.

Problem Day 1 Answers CH343 Bruce A. Hathaway. Problem 1: Carbon NMR Seven types of Carbons: 4 benzene carbons and 3 sp 3 carbons.

Polymer Synthesis CHEM 421 Free Radical Polymerizations.

Polymers: 1. Introduction 2. The variety of Polymeric Materials Dept. Phys., Tunghai Univ. C. T. Shih.

PE335 Lecture 21 Lecture# 3 Molecular Mass and Chain Microstructure Mass vs. Weight Molecular “Weight” and Distribution Averages Polydispersity Property.

Polymers: a chemical point of view

Polymer Chemistry CHEM List of Topics No. of Weeks Contact Hours Introduction to polymer chemistry, definitions and types of polymeric materials.

Chemistry 367L/392N Macromolecular Chemistry Step Growth Chain Growth Lecture 5.

Chemistry of Synthesis

Polymer chemistry.

Ionic Polymerization.

Ch 27 Polymers 1. Show the mechanism for the following chain-growth polymerizations with the given monomers: Radical polymerization, monomer: CH2CHCl.

Polymerization Reactions Chemistry II. Types of Polymerization Reactions Addition polymerization – monomers are added together, with no other products.

Lecture 4 & 5 Polymerization Reactions Polymer Science and Engineering.

Chain and Step Growth Polymerization Brazel & Rosen 8.1

Formal Crystallography Crystalline –Periodic arrangement of atoms –Pattern is repeated by translation Three translation vectors define: –Coordinate system.

Part III: Polymer Characterization - Chapter 6: Characterization of Molecular Weight - Chapter 7: Polymer Solubility and Solution - Chapter 8: Phase Transition.

1 Polymerization kinetics of chain growth polymerization Brazel & Rosen Initiation (2 mechanisms) Propagation Termination (2 mechanisms)

Ming Yan Purification and Reengineering of Plastic- Degrading Enzymes.

Polymer Properties Exercise 1.

Particle Sizing by DLS. DLS by Particles of Different Sizes particle of radius R 1 particle of radius R 2 total distribution function of  weighted by.

Polymer Synthesis CHEM 421 Chemical Review 2000, Issue 4 “FRONTIERS IN METAL-CATALYZED POLYMERIZATION” Also Angew. Chem. Int. Ed. 1999, 38, 428 ± 447.

1 CHM 585 / 490 Chapter 7 Properties. 2 Chapter 7 Molecular weight Tg Melting Point.

PSE 406: Lecture 51 Wood Chemistry PSE 406 Lecture 5 Cellulose.

The above properties are also observed in polymers when they cooled below the glass transition temperature. Structure of B 2 O 3 Glass. Although there.

Exercise: Draw the structure of (R)-1-fluoroethanol 2461.

Physics and Chemistry of Hybrid Organic-Inorganic Materials Lecture 12: Polymerizing inorganic monomers dissolved in organic polymers.

CHAPTER 17 Organic Chemistry 17.3 Organic Reactions.

Synthesis of Cleavable Amphiphilic Block Copolymers Deepak Vishnu Dharmangadan, Liying Wang, Qiuying Zhang, Mario Gauthier * Institute for Polymer Research,

"I just want to say one word to you -- just one word -- 'plastics.'"

PHYSICAL PROPERTIES of polymers

Polymer Chemistry 고분자화학 Course Overview.

ACOMP Automatic Continuous Online Monitoring of Polymerization reactions ACOMP allows comprehensive, model-independent, on-line monitoring of monomer and.

2.9 – Weighted Averages.

Polymer Properties Exercise 1.

SunBio Technology Presentation SunBio mPEG-20K 2003.

An overview of polymers

University of Basra, Basra-Iraq

Polymer Properties Exercise 1.

Polymer Molecular Weight

An Investigation of Chiral Recognition in Electrokinetic Chromatography by means of NMR Spectroscopy NMR spectroscopy was used to characterize the interactions.

Organic Chemicals Alcohols R-OH CH3OH methanol (methyl alcohol)

Boronic Acid Block Copolymers

Electrophoresis / SDS-PAGE

UV Degradation of Polymer Structure

Solute Morphology and Transport in Fuel Cell Polymers

Jan Genzer (Department of Chemical & Biomolecular Engineering)

Organic Chemicals Alcohols R-OH CH3OH methanol (methyl alcohol)

Organic Chemicals Alcohols R-OH CH3OH methanol (methyl alcohol)

Polymer Characterization

Genzer Research Group How does substrate geometry affect the surface-initiated controlled polymerization? Jan Genzer (Department.

C.2.10 Sample Questions.

C.2.8 Sample Questions.

C.2.8 Sample Questions.

Fig. 1. PolySTAT synthesis and characterization.

Optical Tracer Self Diffusion Studies of Polyelectrolytes at Low Salt

Presentation transcript:

1 Characterizing Molecular Weight Brazel & Rosen Ch. 5 Number average molecular weight: M n

1H NMR 2 science/polymer-analysis.printerview.html

Weight average molecular weight: M w DP PDI Perfectly “monodispersed” Monodispersed Polydispersed 3 Living polymerization Free radical polymerization Condensation polymerization Coordination polymerization

M n and M w of mixtures 4

A polymer mixture is blended with three lots of polyethylene, A, B, C. How much of each lot is needed to make up a load of 50,000 kg with a M w =250,000 and PDI=3.65? LotMwMw PDIMnMn A500, B250, C125, Sample problem

Methods of MW determination Absolute (M n vs. M w ) – Relative – 6