The kinetics of the radical-initiated solution homopolymerization of a styrene-terminated poly(vinyl alcohol) macromonomer with a degree of polymerization (DP) of 7-9 (A) and copolymerization with styrene (S) have been investigated at 60°C in deuterated dimethyl sulfoxide solution using azobisisobutyronitrile as initiator and 1H n.m.r, as the analytical technique. It was found that the macromonomer exhibits a lower reactivity than styrene and a model monomer with DP = 0, which was confirmed by copolymerization with styrene (rA =0.9 + 0.1 and rs= 1.3___0.1). The hydrophilic macromonomer was then copolymerized onto seed polystyrene latex particles by a shot growth process, a more efficient surface yield being ensured by using polar comonomers like methyl methacrylate and acrylonitrile
Посилання на статтю:
Styrene-terminated poly(vinyl alcohol) macromonomers: 2. Free-radical (co)polymerization studies and application to the functionalization of latex particles / Bernadette Charleux, Christian Pichot* and M. F. Llauro // Polymer. – 1993. – Vol 34. – P. 4352-4359.