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← ScienceWhich consequence results when the Arrhenius constant decreases significantly in polymer curing?
A)Faster polymer network chain scission
B)Extended polymer vitrification duration✓
C)Decreased material stress relaxation rate
D)Accelerated monomer diffusion coefficient increase
💡 Explanation
Decreasing the Arrhenius constant shifts the kinetic parameters, giving decreased curing rate; lower kinetic rates lead to the vitrification process extending because it reduces the number of crosslinks formed, therefore vitrification takes longer, rather than acceleration.
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