A copolymer is formed by the combination of two or more monomer molecules
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Orlan fibre which is used as a wool sub stitute is
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Zeigler - Natta catalyst (AlR3 - AlCl3) is used in the polymerisation of
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Size range of polymer molecules varies from __________ metre.
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__________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate.
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A copolymer of vinyl and vinylidine chloride is called
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Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature.
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Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness?
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Styrene butadiene rubber (SBR) is never used for making
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Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are
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Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are
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Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces
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Polystyrene is a __________ plastic at room temperature.
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__________ is a thermosetting plastic.
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Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6.
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__________ is an addition polymer
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The synthetic fibres produced from __________ are known as rayon.
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__________ is a natural fibre.
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Plasticisers are added to synthetic plastics to
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Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically
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