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词汇 Living anionic polymerization
分类 英语词汇 英语翻译词典
释义

Living anionic polymerization

英语百科

Living anionic polymerization

Triblock copolymer - reaction scheme.
General Star Shaped Polymer
Addition of divinyl benzene to polystyryl lithium by cross-linking agents to polymeric precursor
Addition of hydroxide group through an epoxide.

Living anionic polymerization is a living polymerization technique involving an anionic propagating species.

Living anionic polymerization was demonstrated by Szwarc and co workers in 1956. Their initial work was based on the polymerization of styrene and dienes. One of the remarkable features of living anionic polymerization is that the mechanism involves no formal termination step. In the absence of impurities, the carbanion would still be active and capable of adding another monomer. The chains will remain active indefinitely unless there is inadvertent or deliberate termination or chain transfer. This gave rise to two important consequences:

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