Polymer Technology
Polyvinyl alcohol is used as a

Textile fibre
Cation/anion exchanger
Water soluble adhesive
Non-sticky coating on frying pans

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Polymer Technology
Identify the group in which all the polymers mentioned can be used to make fibres.

Butadiene copolymers, Polyamides, Urea aldehyde
Cellulose derivatives, Polyamides, Polyurathane
Polypropylene, Poly vinyl chloride, Silicon
Cellulose derivatives, Polyisoprene, Polyethylene

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Polymer Technology
Synthetic rubber

Is brittle at low temperature
Deforms, if stretched to double of its original dimension
Is softer at higher temperature
Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

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