Living free radical polymerization with reversible addition-fragmentation chain transfer (the life of RAFT)

Free radical polymerization with reversible addition-fragmentation chain tr ansfer (RAFT polymerization) is discussed with a view to answering the foll owing questions: (a) How living is RAFT polymerization? (b) What controls t he activity of thiocarbonylthio compounds in RAFT polymerization? (c) How d o rates of polymerization differ from those of conventional radical polymer ization? (d) Can RAFT agents be used in emulsion polymerization? Retardatio n, observed when high concentrations of certain RAFT agents are used and in the early stages of emulsion polymerization, and how to overcome it by app ropriate choice of reaction conditions, are considered in detail. Examples of the use of thiocarbonylthio RAFT agents in emulsion and miniemulsion pol ymerization are provided. (C) 2000 Society of Chemical Industry.