Aliphatic polyesters are the common examples of biodegradable Polymers. It is a copolymer of 3-hydroxybutanoic acid and 3-hydroxypentanoic acid.
2. Nylon-2-Nylon-6
It is an alternating polyamide copolymer of glycine( H2N-CH2-COOH) and amino caproic acid [ H2N( CH2) 5COOH ] and is biodegradable.
Some More Impotant Polymers
1. Saran is a copolymer of vinyl chloride and Isused for wrapping food materials.
2. ASS rubber is a copolymer of acrylonitrile, buta-1, 3-diene and styrene. 3. Bubble gum contains styrene butadiene rubber.
4. Epoxy resins are used In making adhesives such as araldite, etc. These are the copolymer of epichlorohydrin and bisphenol-A.
5. Thikol is another variety of synthetic rubber which is a copolymer of ethylene chloride and sodium tetrasulphide( Na2S4).
6. Dynells a copolymer of vinyl chloride and acrylonitrile and is used for making human hair wigs.
7. Silk Is a thread like natural polymer which is obtained from cocoons of sllk worms. It is a natural polyamide fibre.
8. Thermocol Is a foamed plastic obtained by blowing air through molter polystyrene or polyurethane.
9. Superglue is a polymer of methyl α-cyanoacrylate and is obtained by anionic polymerisation of monomer.