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POLYMER TECHNOLOGY

Polymer Technology
Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is

Aluminium triethyl combined with titanium tetrachloride
V₂O₅
Fe
Ni

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Polymer Technology
Thermoplastic resins usually

Can not be reclaimed from waste
Permanent setting resins
Remain hard as long as they are hot
Less brittle than thermosetting resins

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Polymer Technology
Thermosplastic materials

Are heavily branched molecules
None of these
Do not soften on application of heat
Are solvent insoluble

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Polymer Technology
Thiokol is nothing but

Polysulphide rubber
Polyamide fibre
Engineering plastic
Exponded polystyrene

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Polymer Technology
__________ practically possess no elasticity.

Polysulphide rubber
Epoxy resin
Vulcanite or ebonite
Spandex fibre

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