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Polymer Technology

Condensation polymerisation of caprolactam is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6?

Polymer Technology /
Condensation polymerisation of caprolactam is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6?

A. -20 to 25
B. 50 to 75
C. 100 to 150
D. 250-280

Condensation polymerisation of caprolactam is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6? Read More »

Polymer Technology

In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the _____________ fibres?

Polymer Technology /
In case of wet sning of polymers, the polymer solution is forced through snerates into, a coagulating bath to give a filament form. Wet sning is not used in case of the _____________ fibres?

A. Viscose rayon
B. Acrylic
C. Polyvinyl acetate
D. Saturated polyester

In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the _____________ fibres? Read More »

Polymer Technology

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

Polymer Technology /
Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the ___________________?

A. Electrical insulation purpose
B. Tanning of leather
C. Strengthening of plaster of Paris
D. Decorative laminates

Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the ___________________? Read More »

Polymer Technology

In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher ___________________?

Polymer Technology /
In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher ___________________?

A. Densities
B. Melting point
C. Tensile strength
D. Hardness, rigidity & brittleness

In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher ___________________? Read More »

Polymer Technology