COPOLYMERS - created from Mind Map

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Graft

Block

Random

Alternating

Consist of 1 or more blocks of homopolymer are grafted as branches onto a main chain

3 methods of branched graft copolymers

Grafting onto: coupling reaction between backbone & end reactive branches

Grafting from: active sites are generated randomly along the backbone

Macromolecular: copolymerization of preformed macromonomers with another monomer

Composed of 2 monomers cluster together & form blocks of repeating units.

Mixing of short block need high temperature

Eg; tyre(SBS rubber) made from polystyrene & polybutadiene

composed of 2 or more different monomers with random sequence of repeat units

generally synthesized via free radical polymerization method

Eg;rubber made from copolymers of styrene and butadiene

Composed of 2 monomers that alternate in sequence

Formula: -(-A-B-)n-

Eg; Nylon 6,6 consist of alternating unit of hexamethylene diamine & adipic acid