Authors: Wei Ding Chongfu Lv Ying Sun Huoxin Luan Tao Yu Guangmiao Qu
Publish Date: 2011/04/17
Volume: 67, Issue: 8, Pages: 1499-1505
Abstract
The starshaped polymethyl acrylate PMA was synthesized by single electron transfer living radical polymerization SETLRP at 30 °C in dimethyl sulfoxide using 22dibromomethyl13dibromopropane as the multifunctional initiator Cu0 powder and tris2dimethylamino ethylamine Me6TREN as catalyst The structure of polymer was analyzed by 1H NMR and the results showed that the starshaped PMA had perfect chain ends –Br retention In addition the polymerization proceeded smoothly and the time dependence of lnM0/M was linear which could indicate a first order propagation rate with respect to both radicals and monomer concentration the polymerization was the living polymerization The M n and M w/M n of polymer were being measured by Gel Permeation Chromatography The k p app = 00367 h−1 and the conversion was 363 at 16 h meanwhile the M n GPC of the polymer was 13300 and the M w/M n was 140The authors acknowledge the financial support from National Science and Technology fund major project of PRC 2008ZX05011 Heilongjiang Province Natural Science Foundation ZJG0507 Youth Fund of Heilongjiang Province Natural Science Foundation QC08C33 and Graduate funding innovative research in Heilongjiang Province YJSCX2008044HLJ
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