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Synthesis of amphiphilic magnetic microspheres by dispersion copolymerization of styrene and poly(ethylene oxide) macromonomer
Author(s) -
Liu XueYong,
Ding XiaoBin,
Zheng ZhaoHui,
Peng YuXing,
Chan Albert S C,
Yip C W,
Long XinPing
Publication year - 2003
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1031
Subject(s) - macromonomer , copolymer , dispersion polymerization , styrene , materials science , polymer chemistry , ethylene oxide , particle size , dispersion (optics) , polymerization , chemical engineering , amphiphile , polymer , composite material , physics , optics , engineering
Amphiphilic magnetic microspheres ranging in diameter from 5 to 100 µm were prepared by dispersion copolymerization of styrene and poly(ethylene oxide) vinylbenzyl (PEO‐VB) macromonomer (MPEO) in the presence of Fe 3 O 4 magnetic fluid. The effects of various polymerization parameters on the average particle size were systematically investigated. The average particle size was found to increase with increasing styrene concentration and initiator concentration. It also increased with decreasing stabilizer concentration and molecular weight of MPEO. The content of the hydroxyl groups localized in the microspheres ranged from 0.01 to 0.2 mmol g −1 . © 2003 Society of Chemical Industry