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A novel acrylamide A2B2* (A = alkene, B* = alkyl chlorine) type inimer was obtained from commercially available 1,2-ethylenediamine, chloroacetyl chloride and acryloyl chloride. The as-prepared monomer can form water-soluble hyperbranched poly(N,N-ethylidene bis(N-2-chloroacetyl acrylamide))s (HPECA) through atom transfer radical polymerization/self-condensing vinyl polymerization method in the presence alkyl chlorine/CuCl/2,2-bipyridine activation system which can effectively suppress the gelation formation. 1H-NMR spectra and dual detector size exclusion chromatography proved the hyperbranched structure indisputably, and the degree of branching was determined by the detailed analyses of 1H-NMR spectra. The trend of the degree of branching was in consistent with the result of Mark-Houwink exponent a. The experiment results suggested that the conversion was 67%, Mw = 13.2 ? 104, Mark-Houwink a = 0.282 and the degree of branching = 64% when the reaction temperature was 120 oC, reaction time = 168 h and N,N-ethylidene bis(N-2-chloroacetyl acrylamide):Cu(I) = 50:0.62.
A novel acrylamide A2B2 * (A = alkene, B * = alkyl chlorine) type inimer was obtained commercially from 1,2-ethylenediamine, chloroacetyl chloride and acryloyl chloride. The as- prepared monomer can form water- soluble hyperbranched poly (N, N-ethylidene bis (N-2-chloroacetyl acrylamide) s (HPECA) through atom transfer radical polymerization / self-condensing vinyl polymerization method in the presence of alkyl chlorine / CuCl / 2,2-bipyridine activation system which can effectively suppress the gelation formation. 1H-NMR spectra and dual detector size exclusion chromatography proved the hyperbranched structure indisputably, and the degree of branching was determined by the detailed analyzes of 1 H-NMR spectra. The trend of the degree of branching was in consistent with the result of Mark -Houwink exponent a. The experiment results suggested that the conversion was 67%, Mw = 13.2? 104, Mark-Houwink a = 0.282 and the degree of branching = 64% when the reaction temperature was 120 oC, reaction time = 168 h and N, N-ethylidene bis (N-2-chloroacetyl acrylamide): Cu (I) = 50: 0.62.