Modeling the reversible addition–fragmentation transfer polymerization process
Modeling the reversible addition–fragmentation transfer polymerization process
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DOI：
10.1002/pola.10701
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发表时间：
2003-06
期刊：
影响因子：
--
通讯作者：
Aileen R. Wang;Shiping Zhu
中科院分区：
文献类型：
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作者：
Aileen R. Wang;Shiping Zhu
用矩方法建立了可逆加成-裂解转移(RAFT)聚合动力学模型。该模型预测了单体转化率、数均相对分子质量和分子量分布的多分散性。它还提供了关于聚合过程中各种类型的链物种的详细信息，包括传播自由基链、加成自由基链、休眠链和三种类型的死链。利用该模型考察了RAFT试剂浓度和引发剂分解、自由基加成、裂解、歧化、复合终止以及自由基间交叉终止等反应速率常数对聚合反应动力学和高分子链性质的影响。
A kinetic model has been developed for reversible addition-fragmentation transfer (RAFT) polymerization with the method of moments. The model predicts the monomer conversion, number-average molecular weight, and polydispersity of the molecular weight distribution. It also provides detailed information about the development of various types of chain species during polymerization, including propagating radical chains, adduct radical chains, dormant chains, and three types of dead chains. The effects of the RAFT agent concentration and the rate constants of the initiator decomposition, radical addition, fragmentation, disproportionation, and recombination termination of propagating radicals and cross-termination between propagating and adduct radicals on the kinetics and polymer chain properties are examined with the model.