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← ScienceWhich behavior arises when molecular chain branching increases in polymer melts during processing?
A)Enhanced strain hardening during elongation✓
B)Decreased thermal expansion rate
C)Lower glass transition temperature
D)Increased electrical conductivity
💡 Explanation
When branching increases, entanglements increase because the branched chains are more likely to intertwine during processing, resulting in greater resistance to deformation at higher strains. Enhanced strain hardening results, rather than alternatives, which typically involve adjustments to molecular structure or ordering influenced predominantly by chemical composition.
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