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Graft Copolymerization of Styrene and Acrylonitrile in the Presence of Poly(propylene glycol): Kinetics and Modeling
Author(s) -
Li Li,
Wu Linbo,
Bu Zhiyang,
Gong Cheng,
Li BoGeng,
Hungenberg KlausDieter
Publication year - 2012
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.201200012
Subject(s) - copolymer , polymer chemistry , acrylonitrile , polymerization , kinetics , monomer , styrene , radical polymerization , chain transfer , materials science , bulk polymerization , chemistry , polymer , organic chemistry , physics , quantum mechanics
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.