1. An overview of polymers

2. POLYMER STRUCTURES
• What are the general structural and chemical characteristics of polymer molecules?
• What are some of the common polymeric materials, and how do they differ chemically?
• How is the crystalline state in polymers different from that in metals and ceramics ?

3. Naturally occurring polymers
Wood – Rubber
Cotton – Wool
Leather – Silk
Cellulose
Cotton is one of the purest forms of cellulose and has been cultivated since ancient times.
Rubber
Natural rubber is thermoplastic, with a glass transition temperature of –70°C.
cis-polyisoprene

4. Polymer Polyethylene (PE) Poly(vinyl chloride) (PVC)
Polypropylene (PP)

5. How to get the product of PE, PVC and PP

8. How to synthesis of polyester and nylon 6

9. Product of PE in the Markets
Helmet

10. MOLECULAR WEIGHT and Molecular weight distribution

11. Degree of polymerization and polymer chain length

12. Molecular Structure of Polymers

13. Thermoplastics and Thermosets

14. Example of Thermalplastic

15. Copolymer

16. Crystallinity in Polymers

17. Polyolefins with side chains have stereocenters on every other carbon
With so many stereocenters, the stereochemistry can be complex. There are three main stereochemical classifications for polymers.

18. How to Determine Microstructure?
13C NMR is a very powerful way to determine the microstructure of a polymer.
13C NMR spectrum of CH3 region of atactic polypropylene

23. Q and A for Polymers