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What outcome arises from excess thermal energy reaching a polymer?

A)Chain scission reduces molecular weight
B)Exothermic cross-linking increases rigidity
C)Increased crystallization boosts tensile strength
D)Decreased crystallinity increases impact resistance

💡 Explanation

Chain scission, a degradative chain reaction pathway, occurs, because high temperatures break bonds; therefore the molecular weight significantly decreases, rather than cross-linking which would require specific chemical activation and produce a higher molecular weight.

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