Reversible addition-fragmentation reagent

Polymer-linked MWCNT nanocomposites were prepared by reversible addition fragmentation chain transfer (RAFT). The RAFT reagent was successfully grafted on to the surface of MWCNTs and PS chains were grafted from MWCNTs via RAFT polymerization [192], By covalently linking acyl chloride functions of functionalized MWCNTs with living polystyryllithium, Huang et al. succeeded in the preparation of polystyrene-functionalized MWCNTs (Scheme 1.32) [193],... 

In 1998, Chiefari et al. [10] attempted to combine the convenience of radical polymerization with the many benefits of living polymerization, e.g. control of the molecular weight and polydispersity and the possibility of synthesizing block copolymers of complex architecture. They used free-radical polymerization reagents of formula (I) to produce a sequence of reversible addition-fragmentation in which the transfer of the S=C (Z) S moiety between active and dormant chains serves to maintain the living character of the polymerization ... 

Organotungsten reversible addition-fragmentation chain transfer reagents, (IV), prepared by Lo [5] were used with AIBN to polymerize isobutyl acrylate. 

Note 2 The expression controlled radical polymerization" is sometimes used to describe a radical polymerization conducted in the presence of reagents that lead to, e.g., atom-transfer radical polymerization (ATRP), nitroxide- [aminoxyl] mediated polymerization (NMP), or reversible-addition-fragmentation-c/iam transfer (RAFT) polymerization. 

Polymerization with reversible addition-fragmentation chain transfer (RAFT) is a reversible deactivation radical polymerization (RDRP) a process which, with appropriate attention to reagents and reaction conditions, can possess the attributes usually associated with living polymerization. These processes are also often called hving radical polymerizations or controlled radical polymerizations. However, the use of these terms in this context is now discouraged. ... 

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