Polymer Technology - Chemical Engineering Questions and Answers

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Caprolactum, a raw material for the manufacture of nylon-6, is produced from

phenol

naphthalene

benzene

pyridine

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The monomer of poly vinyl chloride (PVC) is

chloroethene

ethylene dichloride

ethyl chloride

chloroform

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Buna-S is also known as

teflon

PTFE

SBR

polycrylates

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Neoprene is chemically known as

polybutandiene

styrene butadiene rubber (SBR)

polyurethane

poly chloroprene

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Lavatory cisterns are normally made of

expanded polystyrene

saturated polyester

perspex

PVC

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Plasticisers are added to synthetic plastics to

impart flexibility.

improve workability during fabrication.

develop new improved properties not present in the original resin.

all (a), (b) and (c).

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Cellulose is the main contituent of most __________ fibres.

acrylic

spandex

synthetic

natural

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__________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.

Epoxy

Amino

Alkyd

Phenolic

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__________ tubes are good substitude for human blood vessels onrheart by-pass operation.

PVC

Polythene

Teflon/dacron

Polystyrene