CuBr2 /Me6 TREN Mediated ARGET ATRP of Methyl acrylate in Polyethylene Glycol

By : Xianrong Shen , Dengzhou Xia , Yixin Xiang , Jiangang Gao

Page No: 229-241

Abstract
ARGET ATRP of methyl acrylate (MA) with low concentration of air stable-CuBr2 catalyst was successfully carried out in green solvent polyethylene glycol (PEG) without any external reducing agent.The polymerizations of MA proceeded in a well-controlled manner as evidenced by kinetic studies, chain extension results, a linear increase of the molecular weights with the increasing of monomer conversion. and narrow molecular weight distribution (Mw/Mn =1.1). Interestingly, we found that the PEG has the reduction ability to CuBr2 and could play as supplement reducing agent cooperation with Me6TREN to mediate ARGET ATRP. Reduction of Cu(II)Br2 to Cu(I)Br by different molecular weight PEG was proved by UV–visible spectroscopy. A.Q.-PEG with different molecular weight have strong effects on polymerization rate and the polymerization can be operated at suitable conditions where the use of catalyst concentration can decrease to 25 ppm level.

Authors :
Xianrong Shen, Dengzhou Xia, Yixin Xiang and Jiangang Gao : School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 241000, PR China.

 

DOI: https://doi.org/10.32381/JPM.2019.36.03.3