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Polymer Technology

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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