Reversible addition-fragmentation 620 INDEX

Living radical polymerizations in miniemulsions have also been conducted by de Brouwer et al. using reversible addition-fragmentation chain transfer (RAFT) and nonionic surfactants [98]. The polydispersity index was usually below 1.2. The living character is further exemplified by its transformation into block copolymers. 

Reversible addition-fragmentation chain transfer (RAFT) radical polymerization allows the synthesis of well-defined macromolecular architectures with a relatively low polydispersity index (Gregory and Stenzel, 2012b Smith et al, 2010). RAFT polymerization achieves their controlled character due to a reversible chain transfer which reduces the number of radicals and thus reduces the occurrence of termination reactions (Lowe and McCormick, 2007). 

Living free radical polymerizations were also carried out in miniemulsion systems via the reversible addition-fragmentation chain transfer mechanism [66]. The colloidal stability of miniemulsions is the key issue, and nonionic surfactants result in the best results. The polydispersity index of molecular weight distribution for the resultant miniemulsion polymer is generally smaller than 1.2. 

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