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 .