Short Answer TypeComment on:
(a) PVC is a hard plastic but polyethylene is soft wax-like.
(b) Addition of sulphur to nutural rubber improves its properties.
(c) Polypropylene is preferred ever polyethylene.
Long Answer TypeBriefly describe the following terms giving one example of each:
(i) Polyolefins
(ii) Polyamides
(iii) Polyesters
(iv) Polydienes
Could a copolymer be formed in both addition and condensation polymerization or not? Explain with examples.
Yes, information of copolymer is possible in both addition and condensation polymerization because the formation of copolymer depends on upon the reaction between two or more different monomer units and not upon the mode of formation of a polymer.
Formation of a copolymer by the reaction of styrene and methyl methacrylate is an example of addition polymerization.
Formation of nylon-66 from adipic acid and hexamethylene diamine is an example of condensation copolymer.
Short Answer TypeWrite the equations for the synthesis of:
Polymethyl methacrylate
Also give one important use of it.
Write the equations for the synthesis of:
Polyacrylonitrile
Also give one important use of it.
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