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The effect of initiator system on acrylate emulsion copolymerization with higher hydroxyl monomer content
Author(s) -
Zhang FaAi,
Yu CaiLi,
Zhu XingHua,
Wei Chun
Publication year - 2006
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.742
Subject(s) - acrylate , ammonium persulfate , monomer , emulsion polymerization , copolymer , polymer chemistry , butyl acrylate , water reducer , materials science , polymerization , emulsion , methacrylate , particle size , methyl methacrylate , acrylic acid , chemical engineering , chemistry , organic chemistry , polymer , cement , metallurgy , composite material , engineering
The influence of the initiator (ammonium persulfate, APS) and APS/reducer system on the acrylate emulsion copolymerization of methyl methacrylate/butyl acrylate/acrylic acid/hydroxylethyl methacrylate (HEMA) was studied. The initiator level, reaction temperature, reducer type and reducer level on the effect of polymerization rate, particle size and size distribution were investigated. It was found that with the existence of hydrophilic monomer HEMA, polymerization rate increased but the particle size decreased and the size distribution became narrowed with the increase of initiator level, reaction temperature and reducer sodium hydrogen carbonate (NaHSO 3 ) level. The APS/NaHSO 3 system had better initiation efficiency than the APS/FeSO 4 system. Copyright © 2006 John Wiley & Sons, Ltd.