Polymer Technology
Nylon 6, 10 which is used for bristles making is superior to nylon 6, 6 due to its lower water absorption capacity, is a/an

Polyester
Polyisoprene
Polystyrene
Polyamide

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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
Increase its viscosity
Reduce the time of vulcanisation and quantity of vulcanising agent
Reduce its viscosity to permit easier processing

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