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← ScienceWhich outcome develops when an amorphous polymer matrix degrades?
A)Chain scission reduces molecular weight✓
B)Increased crystallinity raises glass transition
C)Oxidation enhances polymer crosslinking
D)Crystallite formation induces ductile behavior
💡 Explanation
Chain scission depolymerizes the long polymer chains into shorter fragments; because bond hydrolysis dominates, molecular weight decreases; therefore, the material softens, rather than hardening, because crosslinking or crystallization do not dominate degradation.
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