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← ScienceWhich risk does asymmetrical heating increase in polymer molecules?
A)Chain scission via thermal cracking✓
B)Increased crystallinity due to annealing
C)Cross-linking dominating degradation pathways
D)Hydrolytic degradation via water absorption
💡 Explanation
Thermal imbalances cause chain scission of the polymer via thermal cracking, because bond energies exceed available energy input. Therefore, bond breaking is dominant, rather than cross-linking which requires specific radical initiators or uniform radiative heating conditions.
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