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Atom transfer radical polymerization of n ‐butyl methacrylate in an aqueous dispersed system
Author(s) -
Peng Hui,
Cheng Shiyuan,
Feng Linxian,
Fan Zhiqiang
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12558
Subject(s) - polymer chemistry , monomer , polymerization , atom transfer radical polymerization , chemistry , copper , aqueous solution , methacrylate , radical polymerization , emulsion polymerization , aqueous two phase system , photochemistry , organic chemistry , polymer
Atom transfer radical polymerization of n ‐butyl methacrylate (BMA) was conducted in an aqueous dispersed system with different kinds of copper complexes. The partitioning behavior of the copper complexes, including CuCl/4,4′‐di(5‐nonyl)‐2,2′‐bipydine (dNbpy), CuCl 2 /dNbpy, CuCl/2,2′‐bipydine (bpy), CuCl 2 /bpy, CuCl/bis( N,N ′‐dimethylaminoethyl)ether (bde), and CuCl 2 /bde between the monomer (BMA), and water was studied in detail with ultraviolet‐visible spectroscopy. The results show that with a less hydrophobic ligand, such as bpy or bde, most of the Cu(I) or the Cu(II) complexes migrated from the BMA phase to the aqueous phase, the atom transfer equilibrium was destroyed, and the polymerization was nearly not controlled; it converted to classical emulsion polymerization. As to the very hydrophobic ligand dNbpy, although the partitioning study of the copper complexes indicated that not all the copper species were restricted to the organic phase, the linear correlation between the molecular weight and the monomer conversion and the narrow polydispersities confirmed that the polymerization was still quite well controlled. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3175–3179, 2003