Polymer Technology - Chemical Engineering Questions and Answers

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Thermosetting resins/polymers as compared to thermoplastic ones are

soluble in all organic solvents.

more brittle.

formed by addition polymerisation only.

easily reshaped & reused.

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The generic chemical name for the class of polymers which are commerically known as nylons is

polyolefins

polyamide

polyacrylate

polyurathane

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Polycondensation reaction of polymerisation

does not produce linear polymers.

produces only thermoplastic material.

produces epoxy polymers.

does not need any catalyst.

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Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but

polyacrylonitrile

polyamide

saturated polyester

alkyd resin

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Which of the following is a polymer of hexamethylene diamine and adipic acid ?

Nylon-6

Nylon-66

Nylon-6, 10

Epoxy resin

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Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is

nylon-66

teflon

polyester

bakelite

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The process involved in converting rubber into a thin sheet or coating it on fabric is called

extrusion

mastication

calendering

vulcanisation

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Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids ?

Starch

Cellulose

Proteins

Nucleic acids

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Nylon-66 is manufactured from

adipic acid and hexamenthylene diamine.

caprolactum.

maleic anhydride and hexamethylene diamine.

dimethyl terephthalate (DMT) and ethylene glycol.