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Polymer Technology

Polymer Technology
Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces

Alkyd resin
Epoxy resin
Polyamide
Phenolic resin

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Polymer Technology
In condensation polymerisation as compared to addition polymerisation

The monomers are unsaturated compounds
No co-product is lost
The monomers contain two functional groups
Generally only one monomer is involved

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Polymer Technology
Branched chain polymers compared to linear polymers have higher

Melting point
Density
Tensile strength
Degree of irregularity in atomic packing

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

Polystyrene
Teflon/dacron
Polythene
PVC

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Polymer Technology
Zeigler - Natta catalyst (AlR₃ - AlCl₃) is used in the polymerisation of

Styrene
Vinyl chloride
Propylene
Vinyl acetate

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Polymer Technology
Mastication of rubber means

Improving its curing rate
Depression of its freezing point
Its softening
A treatment to retard its deterioration due to oxidation

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