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Which outcome occurs when thermal stress ruptures epoxy-based composite materials?

A)Hydrolytic weakening accelerates polymer chain scission
B)Hydrogen bonds become more rigid overall
C)Covalent bonds stretch toward equilibrium
D)Van Der Waals forces strengthen immediately

💡 Explanation

Hydrolytic weakening leads to polymer chain scission at ester linkages, because moisture intrusion leverages thermally-induced stress in the epoxy; therefore, this is true rather than stretching covalent bonds, which requires higher energy, or increased short-range attractions.

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