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

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

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

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

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