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3767753 
Journal Article 
Aqueous MADIX/RAFT Polymerization of Diallyldimethylammonium Chloride: Extension to the Synthesis of Poly(DADMAC)-Based Double Hydrophilic Block Copolymers 
Destarac, M; Guinaudeau, A; Geagea, R; Mazieres, S; Van Gramberen, E; Boutin, C; Chadel, S; Wilson, J 
2010 
Yes 
Journal of Polymer Science. Part A, Polymer Chemistry
ISSN: 0887-624X
EISSN: 1099-0518 
JOHN WILEY & SONS INC 
HOBOKEN 
48 
22 
5163-5171 
WOS:000284109000028 
Macromolecular design by interchange of xanthates/reversible addition fragmentation chain transfer polymerization (MADIX/RAFT) of diallyldimethylammonium chloride (DADMAC) using the hydrophobic O-ethyl-S-(1-methoxycarbonyl) ethyl dithiocarbonate MADIX/RAFT mediating agent, Rhodixan A1, was investigated. Attempts to obtain an efficient control of DADMAC polymerization in a water/ethanol mixture failed because of significant chain transfer to ethanol. The use of a water-soluble Rhodixan A1-terminated acrylamide oligomer as the MADIX/RAFT agent enabled the controlled polymerization of DADMAC in water at 50 degrees C using the cationic azo initiator V-50. An excellent agreement was found between experimental and theoretical M(n) values throughout polymerization and over a broad range of initial concentration of xanthate. Polydispersity indexes (PDIs) at the end of the polymerization were abnormally high for a process showing a linear increase of Mn with monomer conversion (1.8 < PDI < 2.0). This feature was explained by the measurement of a high transfer constant to xanthate (C(x) 18.8 +/- 1.6) but a low interchange transfer constant (Ce(x) = 1.5). Nevertheless, poly(acrylamide)-poly(DADMAC) double hydrophilic block copolymers (DHBCs) of controlled M(n) and composition could be successfully synthesized for the first time. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 5163-5171, 2010 
diallyldimethylammonium chloride; diblock copolymers; macromolecular design by interchange of xanthates (MADIX); reversible addition fragmentation chain transfer polymerization (RAFT); water-soluble polymers