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← ScienceWhich risk increases when molecular vibrational energies increase in epoxy?
A)Decreased material tensile strength
B)Reduced resistance to solvent attack
C)Diminished adhesive bonding effectiveness✓
D)Increased glass transition temperature
💡 Explanation
Increased molecular vibrational energies in epoxy increase chain mobility, reducing the **strength of intermolecular forces**. This reduction impairs the epoxide's adhesive capabilities because the chains fail to form strong physical bonds; therefore, the bond fails, rather than increasing material transitions.
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