writer：Li Li, Linbo Wu,* Zhiyang Bu, Cheng Gong, Bo-Geng Li,* Klaus-Dieter Hungenberg.
keywords：接枝聚合，动力学，颗粒增长
source：期刊
specific source：Macromol Reaction Eng. 6(9-10): 395-405, 2012;
Issue time：2012年

The particle growth in the graft free-radical copolymerization of styrene (St) and acrylonitrile

(AN) in the presence of poly(propylene glycol) is investigated by experiments and modeling. The concentrations of chain transfer agent andmacromer, and the St/ANratio play important roles in particle size and its distribution. A particle size model is developed and an analytic expression for the particle size in terms of monomer mass concentration (Wmt0), initiator molar concentration ([I]0), and macromer mass concentration (WM0) is derived. The particle size is described experimentally as: W0:58 mt0 W0:65 M0 ?I0:06 0 . Particle growth processes under various experimental conditions are well described by the model.