Ultrafast single-electron-transfer/degenerative-chain-transfer mediated living radical polymerization of acrylates initiated with iodoform in water at room temperature and catalyzed by sodium dithionite

摘要

Sodium dithionite in the presence of NaHCO3, in water acts as a single-electron-transfer agent and facilitates the single-electron-transfer/degenerative-chain-transfer mediated living radical polymerization (SET-DTLRP) of acrylates initiated with iodoform at room temperature. The resulting alpha,w-di(iodo)polyacrylates can be used as macroinitiators for the SET-DTLRP of other acrylates. Ultrahigh-molar-mass poly(tert-butyl acrylate) can be synthesized via the SET-DTLRP of tert-butyl acrylate and has a very low weight-average molecular weightumber-average molecular weight ratio of 1.15. (c) 2005 Wiley Periodicals, Inc.