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Polymer Technology

Polymer Technology
__________ is a homopolymer.

Terylene
Neoprene
Bakelite
Nylon-66

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Polymer Technology
Low pressure Zeigler process of polythene manufacture

Achieves an yield of 95-98% based on ethylene
Employs a pressure of 30 kgf/cm²
Does not use any catalyst for polymerisation
Produces very low density polythene

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Polymer Technology
Styrene which is a monomer for the production of polystyrene, is commercially produced by the

Dehydration of ethyl alcohol followed by hydrogenation
Reacting ethylene oxide with acetal-dehyde
Catalytic dehydrogenation of ethyl benzene
Fermentation of starch

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Polymer Technology
Epoxy resin is

A polyester
A good abrasive
Not used for surface coating
An elastomer

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Polymer Technology
The physical state in which polymers exist is

Amorphous glassy state
Melts & rubber like state
Partially crystalline state
All of these

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Polymer Technology
Valcunisation of rubber decreases its

Tensile strength
Working temperature range
Resistance to organic solvents
Tackiness

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