Polymer Technology
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Synthetic rubber

Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the

__________ are produced by reacting polybasic acid
(e.g. phthalic anhydride) with polyhydric alcohol
(e.g., glycerol)

Polyesters are manufactured by the polycondensation reaction of

Thermosetting polymers as compared to thermoplastic polymers

In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smallermolecules.
An example of step growth polymerisation product is

Epoxy resin is a polymer containing two or more groups called epoxide group or ethoxylinegroup.
It is a

Cation exchange resins used in water treatment is made from __________ resin

Nylon-66 is manufactured from

__________ polythene is most prone to stress-cracking

Rayon is superior to cotton in making gauge for wound treatment, because rayon

Synthetic polymer produced by using terephthalic acid and ethylene glycol is

Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins

Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinarytemperature.
Which of the following is not a plasticiser

Polyvinyl chloride (PVC)

Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is

Density of high density polythene is about __________ gm/c.c

The synthetic fibres produced from __________ are known as rayon

Plastic tubes & pipes are generally made by __________ moulding

Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten

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