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During polyethylene production, which mechanism limits molecular weight?

A)Chain transfer to monomer
B)Vinyl polymerization acceleration
C)Branch entanglement dominance
D)Reactive end-group termination

💡 Explanation

Chain transfer to monomer terminates the growing polymer chain because a hydrogen atom abstracts from a monomer to the active polymer end, therefore, limiting molecular weight, rather than allowing continuous growth as in propagation.

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