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Polymers
(a) Dacron is obtained by heating terephthalic acid with ethylene glycol at 425–475 K. It is a condensation polymer.
(b) Bakelite is a condensation polymer. It is obtained by treating phenol with formaldehyde in the presence of an acidic or basic catalyst.
The condensation of o-hydroxy benzyl alcohol or p–hydroxy benzyl alcohol gives a linear polymer called ‘Novolac’.
On further heating with formaldehyde ‘novolac’, undergoes cross-linking to form an infusible solid called bakelite.
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Arrange the following polymers in increasing order of their intermolecular forces.
Nylon-6, Neoprene, Polyvinyl chloride.
Explain the terms polymer and monomer.
How do you explain the functionality of a monomer?
Define the term polymerization.
Is (NH—CHR—CO)n, a homopolymer or copolymer?
What is condensation polymer?
Give one example each of (i) Addition polymer (ii) Condensation polymer.
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