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← ScienceWhich outcome accelerates molecular photochemical degradation in polymers?
A)Increased chromophore concentration within the material✓
B)Reduced polymer chain mobility internally
C)Higher average molecular weight overall
D)Reinforcement using crystalline filler agents
💡 Explanation
Increased chromophore concentration enhances photochemical degradation because excited-state absorption causes direct bond scission and chain breakdown through *photolysis*. Therefore, degradation speeds up, rather than slowing down due to chain mobility or reinforcement under different conditions.
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