Elastomers possess a unique ability to stretch out over ten times their normal length and retract to their original shape. Thermodynamically and structurally, what is the primary reason for this behav

Question

Elastomers possess a unique ability to stretch out over ten times their normal length and retract to their original shape. Thermodynamically and structurally, what is the primary reason for this behavior?

Prashant Kotian · Accepted Answer

Correct answer: B. Elastomers consist of randomly coiled flexible chains with weak intermolecular forces. Stretching uncoils these chains, forcing them into a highly aligned, low-entropy state. Upon removal of the stress, the chains retract to their highly coiled, maximum entropy state. Sparse cross-links prevent the chains from completely slipping past one another.

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