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On the Possibility of Different Reactivity of Growing Radicals in Controlled and Free Radical Polymerizations. The Concept of the Reaction Cage in Controlled Radical Polymerization

机译:在控制和自由基聚合中生长自由基不同反应性的可能性。 控制自由基聚合中的反应笼的概念

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摘要

In some reversible deactivation radical polymerization (RDRP) processes retention of chain-end functionality appears to be higher than expected based on the estimated rate constants of propagation and termination. In the recent paper, Ballard and Asua explained this observation using their concept of the probability density functions of the termination reactions, dependent on the initial diffusion stage of radicals being the nearest neighbors. Here, a new explanation of the observed phenomenon is proposed, alternative to their proposition. The presented hypothesis assumes interaction of growing radical with the RDRP deactivator, resulting in two types of radicals.
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