期刊
MACROMOLECULAR REACTION ENGINEERING
卷 1, 期 4, 页码 425-439出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mren.200700010
关键词
atom transfer radical polymerization (ATRP); living radical polymerization; kinetics (polym); computer modeling styrene
Batch and semibatch styrene polymerizations are carried out using a heterogeneous ATRP catalyst system that provides excellent molecular-weight control. The observed initiator efficiency is lower for semibatch operation due to the high initiator concentrations required to make a low-MW polymer. Experiments verified that the insoluble metal complex does not participate in the polymerization and that Cu(I) solubility is an order of magnitude higher than that of Cu(II). A mechanistic model, using kinetic coefficients from literature and the solubility data from this study, provides a good representation of the experimental results.
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