Which risk significantly increases when cross-linking between polymer chains weakens?

💡 Explanation

Weakening polymer cross-links compromises structural integrity, causing viscous flow during 'Creep'; chain sliding is enabled via thermal energy, rather than brittle fracture. Therefore, creep resistance decreases because the entanglements become ineffective under stress rather than becoming more resistant.

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• Which mechanism causes increased electrical resistance in a doped semiconductor when heated?
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