Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 21    Special 1    March 2011

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Synthesis of crosslinked polystyrene particles by
seeded batch polymerization with monomer absorption
Ki-Chang LEE, Han-Ah WI

Department of Polymer Science and Engineering, Engineering Research Institute,
Gyeongsang National University, Jinju 660-701, Korea

Abstract:A highly crosslinked, monodispersed polystyrene(PS) particle was prepared by a seeded batch dispersion polymerization with a monomer absorption method. Prior to polymerization, 1.9 μm monodispersed PS seed particles were treated under an optimum condition of monomer absorption. The effects of divinylbenzebe(DVB) concentration and polymerization temperature were examined for styrene(in PS seed)/styrene(in the second stage) mass ratio of 1:1 in the medium range of EtOH/water mass ratio of 100/0−80/20 and 2.3 μm uniform crosslinked PS particles containing 15%−20% (mass fraction) DVB were prepared at 60−70 °C. The results show that monomer absorption before the second stage of polymerization is more effective to prepare highly crosslinked monodispersed PS particles.

 

Key words: crosslinked polystyrene particle; seeded batch dispersion polymerization; monomer absorption; divinylbenzene (DVB)

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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