A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of

Polymer Technology
A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of

Vinyl polymers

Polyamides

Urea-formaldehyde resins

Siloxane elastomers

Vinyl polymers

Polyamides

Urea-formaldehyde resins

Siloxane elastomers

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

Is a synthetic polymer

Both B & C

Can absorb over 90% of its own weight of water

Does not stick to the wound unlike cotton

Is a synthetic polymer

Both B & C

Can absorb over 90% of its own weight of water

Does not stick to the wound unlike cotton

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Polymer Technology
Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to

Protect rubber goods from attack by oxygen & ozone present in the atmosphere

Reduce its viscosity to permit easier processing

Reduce the time of vulcanisation and quantity of vulcanising agent

Increase its viscosity

Protect rubber goods from attack by oxygen & ozone present in the atmosphere

Reduce its viscosity to permit easier processing

Reduce the time of vulcanisation and quantity of vulcanising agent

Increase its viscosity

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Polymer Technology
Vulcanisation of raw rubber makes it

Less elastic

Soft

Plastic

Tacky

Less elastic

Soft

Plastic

Tacky

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Polymer Technology
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?

Carbon black

Rosin

Phosphorous

Pine oil

Carbon black

Rosin

Phosphorous

Pine oil

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Polymer Technology
Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.

50

-20

500

250

50

-20

500

250

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Polymer Technology

Polymer Technology A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of

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

Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to

Polymer Technology Vulcanisation of raw rubber makes it

Polymer Technology 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?

Polymer Technology Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.

Polymer Technology
A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of

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

Polymer Technology
Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to

Polymer Technology
Vulcanisation of raw rubber makes it

Polymer Technology
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?

Polymer Technology
Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.