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Thermodynamically, what happens when an elastomeric material like natural rubber is stretched, and wPolymers Chemistry Question

Question

Thermodynamically, what happens when an elastomeric material like natural rubber is stretched, and why does it retract to its original shape upon release of the stress?

Answer: B

💡 Solution & Explanation

Elastomers consist of flexible, randomly coiled macromolecules. Stretching uncoils these chains, forcing them into a highly aligned, less probable state (lower entropy). The retraction is thermodynamically driven by the tendency of the chains to return to their maximum entropy, randomly coiled state.

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