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Part 1. Introduction to Polymer Science

Part 1. Introduction to Polymer Science. 4 th edition L. H. Sperling ISBN 0-471-70606-X. Midterm + Final 50 % Quizzes 50 %. Introduction to Polymer Science Chain Structure and Configuration Dilute Solution Concentrated Solution The amorphous state The crystalline state

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Part 1. Introduction to Polymer Science

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  1. Part 1.Introduction to Polymer Science 4th editionL. H. Sperling ISBN 0-471-70606-X Midterm + Final 50 % Quizzes50 %

  2. Introduction to Polymer Science • Chain Structure and Configuration • Dilute Solution • Concentrated Solution • The amorphous state • The crystalline state • Polymers in the liquid crystalline state • Glass-Rubber Transition Behavior • Cross-linked Polymers and Rubber Elasticty • Polymer Viscoelasticity and Rheology • Mechanical Behavior of Polymers • Polymer Surfaces and Interfaces • Muticomponent Polymeric Materials • Modern Polymer Topics

  3. Part 2.Polymer Crystallography Crystallization Mechanism Diffraction (WAXS/SAXS)

  4. Chapter 1. Introduction to Polymer Science

  5. Polymer comes from life

  6. From Caouchouc (“weeping tree”) to vulcanized rubber

  7. Vulcanization of natural rubber Charles Goodyear (1800-1860)

  8. Macromolecular Hypothesis HERMANN STAUDINGER (1881-1965) 1953 Nobel Laureate in Chemistry for his discoveries in the field of macromolecular chemistry. Background Residence: Germany

  9. 1.1 From little molecules to big molecules

  10. Alkane/Polyethylene Monomer  oligomer  polymer

  11. Molecular weight-melting temperature relationship for the alkane series Tm of PE

  12. Comparison of wax and polyethylene structure and morphology

  13. Entanglement of polymer chains Low molecular weight No entanglement High molecular weight Chains are entangled

  14. 1.2 Molecular weight and molecular weight distributions 1.2.1 Effect on tensile strength sbis tenile stress to break Mn is the number-average molecular weight A and B are constants

  15. 1.2.2 Molecular weight average Number average molecular weight Weight average molecular weight Mw/Mn: polydispersity index

  16. 1.3 Major polymer transition • Glassy • glassy transition • rubbery plateau • Rubbery flow • Viscous flow

  17. 1.4 Polymer synthesis and structure 1.4.1 Chain polymerization 1.4.1.1 Free Radical polymerization Initiation Propagation termination 1.4.1.2 initiation

  18. 1.4.1.3 propagation 1.4.1.4 termination

  19. 1.4.2 Step polymerization 1.4.2.1 A polyester condensation reaction

  20. Nylon 4 Nylon 48

  21. 1.4.2.2 Stepwise nomenclature and structures

  22. 1.5 Cross-linking, plasticizers, and fillers The cross-linking of rubber with sulfur is called “vulcanization”

  23. 1.7 Historical development of industrial polymers

  24. PB PE PP PI PS PAN

  25. PVAC PVA PVC

  26. Teflon PMMA

  27. PPO POM Nylon66 PEO Nylon6 PET

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