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Polymers

Short Answer Type

111.

What is Novolac?

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112.

What type of molecules act as initiators in cationic addition polymerization?

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113.

Give the uses of low density and high density polymers.

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114.

What are natural and synthetic polymers? Give two examples of each type.

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115.
Distinguish between the terms homopolymer and copolymer and give an example of each.

Homopolymers are the polymers derived from the polymerization of only one kind of monomer. For example polythene is homopolymer which is made by only one monomer such as ethene.

Copolymers are the polymers obtained by the polymerization of two or more kind of monomers. For example Buna -S is copolymers which is made by two monomer such as 1,3 butadiene and styrene.

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