writer：Yu-Zeng Zhao, Xin-Lin Yang, Wen-Qiang Huang*
keywords：Core-shell microspheres; Atom transfer radical polymerization (ATRP); Graft polymerization
source：期刊
specific source：Chin. J. Polym. Sci., 23 (3), 235-242 (2005).
Issue time：2005年
Grafting of poly(methyl methacrylate) from narrow disperse polymer particles by surface-initiated atom transfer radical polymerization (ATRP) was investigated. Polydivinylbenzene (PDVB) particles were prepared by dispersion polymerization with poly(N-vinyl pyrrolidone) (PVP) as the stabilizer. Chloromethylated PDVB was used as initiating core sites for subsequent ATRP of methyl methacrylate with CuBr/bpy as catalyst system. It was found that poly(methyl methacrylate) was grafted not only from the particle surfaces but also from within a thin shell layer, leading to particles size increases from 2.38–3.00 μm with a core-shell structure particles. The grafted core-shell particles were characterized with FTIR, SEM, DSC.