a Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
Polym. Chem. 2013, 4, 5664-5670
In this work, the iron-mediated (dual) concurrent ATRP–RAFT polymerization of water-soluble poly(ethylene glycol) monomethyl ether methacrylate (PEGMA) was investigated at different polymerization temperatures (from 90 °C to 30 °C), using 2-cyanoprop-2-yl-1-dithionaphthalate (CPDN) as an alkyl pseudohalide initiator, ethyl 2-bromoisobutyrate (EBiB) as a co-initiator, and FeCl3·6H2O/PPh3 complex as the catalyst. The polymerization kinetics was studied in detail at polymerization temperatures of 90 °C and 30 °C. The results showed that the concurrent ATRP–RAFT polymerization (using only CPDN as the initiator) of PEGMA could be carried out successfully, even if the polymerization temperature was reduced to 30 °C. Furthermore, the polymerization rate was remarkably enhanced via dual concurrent ATRP–RAFT polymerization (using CPDN and EBiB as co-initiators). For example, the monomer conversion could be higher than 70% in the dual concurrent ATRP–RAFT polymerization system in 65.5 h, while a conversion of only 22% could be obtained after 167 h for the concurrent ATRP–RAFT polymerization system at 30 °C. The “living” features of dual concurrent ATRP–RAFT polymerization of PEGMA were verified by chain end analysis and chain-extension experiments.
链接：
//pubs.rsc.org/en/content/articlelanding/PY/2013/c3py00671a#!divAbstract
