Elastomers possess a unique ability to stretch out over ten times their normal length and retract to — Polymers Chemistry Question
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?
Answer: B
💡 Solution & Explanation
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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