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← ScienceWhich mechanism primarily weakens elastomer stiffness at higher loading frequencies?
A)Molecular chain segment immobilisation✓
B)Increased cross-link bond scission
C)Viscous polymer phase separation
D)Crystallite domain boundary slippage
💡 Explanation
Molecular chain segment immobilisation increases because chain mobility lags behind the applied deformation at higher frequencies. Therefore, the elastomer becomes stiffer due to reduced responsiveness rather than other degradation mechanisms or phase changes under load.
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