Polymer Technology
Thermosplastic materials

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

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Polymer Technology
Thermocole (expanded polystyrene) is not used for

Low temperature thermal insulation as in refrigerator and air conditioners
Accoustic control and ceiling for building
Packing of delicate electronic gadgets
High temperature thermal insulation in furnaces

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Polymer Technology
Polyvinyl chloride (PVC)

Uses either emulsion or suspension polymerisation methods
Is produced by polycondensation reaction
Softening temperature is 200°C
Can be made thermosetting by adding a plasticiser

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