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Graft Copolymerization of Styrene and Acrylonitrile in the Presence of Poly(propylene glycol): Kinetics and Modeling.
作者:Li Li, Linbo Wu,* Zhiyang Bu, Cheng Gong, Bo-Geng Li,* Klaus-Dieter Hungenberg.
關鍵字:接枝聚合物,苯乙烯,丙烯腈,聚醚,動力學,模型
論文來源:期刊
具體來源:Macromol Reaction Eng. 6(9-10): 365-383, 2012DOI: 10.1002/mren.201200012
發表時間:2012年

A heterogeneous polymerization model, including an initial solution polymerization model and a later two-phase polymerization model, is developed to describe graft free-radical copolymerization of styrene and acrylonitrile in the presence of poly(propylene glycol). The diffusion-controlled termination, initiation, propagation, and transfer in the dispersed phase are considered reasonably. The model describes the polymeriztion kinetics well. The main polymerization locus shifts from the continuous phase into the dispersed phase at monomer conversion of 0.03–0.05, leading to sharp increase in polymerization rate and molecular weight, decrease in graft efficiency and broadening of the MWD.


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