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← ScienceWhich risk increases when sustained excessive molecular vibration occurs in thermoset polymers?
A)Reduced oxidation reaction pathways
B)Increased material glass transition
C)Propagating microcrack development✓
D)Elevated polymer chain alignment
💡 Explanation
Sustained vibrations instigate bond scission via vibrational energy transfer; this is the Zhurkov equation. Because this reduces the energy required for crack formation, therefore microcrack propagation increases rather than oxidation; that depends on external chemical factors.
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