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← ScienceWhich mechanism diminishes tensile strength when polymers experience hydrolytic degradation?
A)Chain scission within the polymer✓
B)Cross-linking density increasing overall
C)Crystallite size decreasing abruptly
D)Glass transition temperature elevation gently
💡 Explanation
When polymers undergo hydrolytic degradation, chain scission occurs as water molecules break the polymer chains apart via hydrolysis of ester or amide bonds, reducing the average molecular weight, decreasing tensile resistance. Therefore chain scission leads to diminished strength, rather than cross-linking change, which needs external chemistry.
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