Polymer Technology
Which of the following is generally not drawn into fibre?

Unsaturated polyesters
Polyamide
Saturated polyesters
Polyacrylonitrile

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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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