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Nrusinha Kar

What are block copolymers?

Chris Harper  Follow

Block copolymer is a block of two different polymers fused together.

For instance, you polymerize first styrene monomers to form polystyrene and then if you add methyl methacrylate (MMA) monomer to further latter’s polymerization you end up with polystyrene-block-polymethylmethaacrylate (PS-b-PMMA).

In general terms, block copolymer is ~AAAAAAAAAABBBBBBBBBBBBBBB~

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Blessing Benjamin  Follow

Block copolymers:—

Block copolymers are those in whch different blocks of identical monomer units alternate with each other as

(-A-A-A-A-B-B-B-B-A-A-A-A-B-B-B-B-)n

These are prepared by initiating the polymerisation of one monomer as if growing a homopolymer and then adding an excess of second monomer to the active reaction mixture.

Graft copolymers:—

Graft copolymers are those in which homopolymer branches of one monomer units are grafted on the homopolymer chains of another monomer units as

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