Controlled radical polymerization catalyzed by CuCl/BDE complex in water medium. I. Polymerization of styrene and synthesis of poly(St-b-MMA)

✍ Scribed by Xiaolong Wan; Shengkang Ying

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 145 KB
• Volume: 75
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(20000207)75:6<802::aid-app9>3.0.co;2-e

✦ Synopsis

The controlled radical polymerization of styrene in water medium, in the presence of polyoxyethylene nonyl phenyl ether, catalyzed and initiated by CuCl/BDE [bis(N,NЈ-dimethylaminoethyl)ether]/R-X was studied. The results show that the molecular weight increased with conversion of the monomer. Using this controlled system, the block copolymer, poly(St-b-MMA), was successful synthesized in water medium. In reference to the system of CuCl/BDE/PhCH 2 Cl, the polymerization may also occur in the micelle to produce a superhigh molecular mass (M n ϭ 1,500,000) polymer with monodispersion (MWD, M w /M n ϭ 1.03). The Cu(I) and Cu(II) partition ratio in two phases, which may affect the reversible deactivation and debase the catalyst efficiency, was detected.