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Which kind of polymer arrangement does the below diagram represent?

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Which kind of polymer arrangement does the below diagram represent?

(a) Unvulcanized

(b) Vulcanized

(c) Stretched vulcanized

(d) Stretched unvulcanized

This question was posed to me in semester exam.

This interesting question is from Structure and Properties of Elastomers in division Glass & Elastomers of Engineering Material & Metallurgy

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Correct option is (c) Stretched vulcanized

Best explanation: Polymer structures in elastomers are classified as vulcanized (unstretched), unvulcanized, or stretched vulcanized rubber. The vulcanization process involves cross-linking of covalent bonds. This results in a material similar to a thermoset.

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