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Chemical Engineering - Polymer Technology - Discussion

Discussion Forum : Polymer Technology - Section 1 (Q.No. 42)
Polymer Technology
42.
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.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.
Rk mishra said:   6 years ago
What are peptizers?
KRR said:   3 years ago
A substance which causes peptization, or which serves to prevent the coagulation of a colloid suspension; specifically a catalyst used to facilitate the process of mastication or vulcanization of rubber, by preventing the recombination of broken polymer chains.

Mastication, the process by which the viscosity of natural rubber is reduced to a suitable level, is an important step in the mixing process.
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