Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to _________________?
Correct answer: C. Reduce its viscosity to permit easier processing
- A. Protect rubber goods from attack by oxygen & ozone present in the atmosphere
- B. Reduce the time of vulcanisation and quantity of vulcanising agent
- C. Reduce its viscosity to permit easier processing
- D. Increase its viscosity
Explanation
Peptizers break down rubber chains during mastication, lowering its viscosity and making mixing and shaping easier. Protection against oxygen and ozone is provided by antioxidants and antiozonants, not peptizers.
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