Polymer Technology
Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres.

Acrylic
Polypropylene
Polyester
Nylon 6:6

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Polymer Technology
Elastomers are

Having high flexural strength
Thermosetting material
Exemplified by protein derivatives
Having very high tensile strength and heat resistance

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Polymer Technology
Pickout the wrong statement.

Polymers made of more than one monomer is called copolymer or mixed polymer
Polymers made of only one monomer is called homopolymer
The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres
Vulcanised rubber is more elastic than natural rubber

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