1. 8/7/20151 Physical Polymer B.Pourabbas Faculty of Polymer Eng. Sahand University of Tech. pourabas@sut.ac.ir

2. What We Study? 1.Physical Aspects of the Chain Properties: Such as: –T–Thermal Behavior: Melting, Tg, Other transitions and so on. 8/7/20152

3. What We Study? –Solubility The solvent-polymer interactions The effect of conditions: temperature and pressure Chain structure and so on 8/7/20153

4. What We Study? –Surface and interface properties Surface dynamics Surface energies 8/7/20154

5. What We Study? –Mechanical Properties Rubber Elasticity Rubber-glass transitions Yielding Viscoelasticity 8/7/20155

6. What We Study? 2.The basic concepts and features which the physical properties themselves depends on. Chain Structure –Liner –Branched –Cross-linked –Co-polymer –Chain Configuration –Chemistry –Crystalinity 8/7/20156

7. What We Study? The size of the chains –Statistically defined molecular weights –Width of polydispersity 8/7/20157

8. What We Study? 3.The methods for measurement of the properties: Chemical Methods: –Elemental Analysis –Functional Group Analysis –Selective Degradation 8/7/20158

9. What We Study? Physical Methods: –NMR –IR & Raman –UV-visible –XPS –XRD 8/7/20159

10. Where From We Study? 1.Introduction to PHYSICAL POLYMER SCIENCE; By: Sperling (pdf file is available) 8/7/201510

11. Where From We Study? 2. Introduction to Polymer Physics 8/7/201511

12. Where From We Study? 3. Polymer Physics 8/7/201512

13. Where From We Study? 4. Polymer Physics 8/7/201513

14. All the presentation files will be in your reach. 8/7/201514

15. Your Class Activities Being in the class Homeworks Questions planed Projects and presentations Mid-Term exams (Several) Final Exam 8/7/201515

16. Anythingelse? 8/7/201516

17. Let’s Get Started 8/7/201517

18. 8/7/201518 Chain Configuration  Polymer chains have three basic properties 1.The Molecular Weight, 2.The conformation of the chain in the space,conformation 3.The configuration of the chain (microstructures),

19. 8/7/201519 Examples of Configurations and Conformations 1.Head to tail and head to head configurationHead to tail 2.Trans-Gauche ConformationTrans-Gauche

20. 8/7/201520 Chemical Methods Chemical Methods of Determining Microstructures

21. 8/7/201521 Physical Methods Physical Methods of Determining Polymer Chain Microstructure

22. 8/7/201522 Stereo Chemistry of Repeating Units 1.Chiral CentersChiral Centers 2.Tacticity in PolymersTacticity in Polymers 3.Optical IsomerismOptical Isomerism 4.Geometric IsomerismGeometric Isomerism 5.Substitutional IsomerismSubstitutional Isomerism Chiral Center isotactic syndiotactic atactic

23. Meso And Racemic 8/7/201523

24. 8/7/201524 Common Types of Copolymers 1.Unspecified CopolymersUnspecified Copolymers 2.Statistical CopolymersStatistical Copolymers 3.Random CopolymersRandom Copolymers 4.Alternating CopolymersAlternating Copolymers 5.Periodic CopolymersPeriodic Copolymers

25. 8/7/201525 Multi Component Polymers 1.Block CopolymersBlock Copolymers 2.Graft CopolymersGraft Copolymers 3.AB-Cross-Linked CopolymersAB-Cross-Linked Copolymers 4.Interpenetrating Polymer NetworksInterpenetrating Polymer Networks

26. 8/7/201526 Energy and Conformational States in Polymers

27. 8/7/201527 Example: Microstructure of Polystyrene

28. 28

29. 29

30. Questions. Fractal! What is fractal nature. Why polymer chains are fractal in dimension? 8/7/201530

31. 8/7/201531 End of Chapter 1