Reversible addition-fragmentation chain transfer xanthates

Although the term RAFT (an acronym for Reversible Addition-Fragmentation chain Transfer)38" is sometimes used in a more general sense, it was coined to describe, and is most closely associated with, the reaction when it involves thiocarbonylthio compounds. RAFT polymerization, involving the use of xanthates, is also sometimes called MADIX (Macromolccular Design by Interchange of Xambate) 96 The process has been reviewed by Rizzardo et [Pg.502]

Scheme 28 Reversible addition-fragmentation chain transfer polymerization (RAFT) or macromolecular design by interchange of xanthates mechanism...

Multifunctional dithioesters, trithiocarbonates, or xanthates can be used to generate arm-first star polymers by reversible addition fragmentation chain transfer (RAFT) polymerization, via the so-called Z-group approach (XXV to XXVII) [42]. 

Polymerization of VPA was successfully performed by aqueous RAFT/ MADIX polymerization, controlled with O-ethyl xanthate as a transfer agent. Reversible addition-fragmentation chain transfer (RAFT) is a polymerization method which uses a chain transfer agent in the form of a thiocarbonylthio compound such as dithioesters, thiocarbamates, and xanthates having the role to mediate the polymerization via a reversible... 

Perrier, S. and Pittaya, T. (2005) Macromolecular design via reversible addition-fragmentation chain transfer (RAFT)/xanthates (MADIX) polymerization.. Polym. Sci., Part A Polym. Chem., 43, 5347-5393. 

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