期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 46, 期 4, 页码 1416-1426出版社
WILEY
DOI: 10.1002/pola.22481
关键词
atom transfer radical polymerization (ATRP); cobalt catalyst; controlled radical polymerization (CRP); immobilized catalyst; ion exchange resin; living polymerization; radical polymerization
Ion exchange resin immobilized Co(II) catalyst with a small amount of soluble CuCl2/Me6TREN catalyst was successfully applied to atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) in DMF. Using this catalyst, a high conversion of MMA (>90%) was achieved. And poly(methyl methacrylate) (PMMA) with predicted molecular weight and narrow molecular weight distribution (M-w/M-n = 1.09-1.42) was obtained. The immobilized catalyst can be easily separated from the polymerization system by simple centrifugation after polymerization, resulting in the concentration of transition metal residues in polymer product was as low as 10 ppm. Both main catalytic activity and good controllability over the polymerization were retained by the recycled catalyst without any regeneration process. (C) 2008 Wiley Periodicals, Inc.
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