Photoinitiation of MMA polymerization by thionine/amine systems in the presence of SDS micelles
作者： Maira R Rodrigues , Fernando Catalina , Miguel G Neumann
DOI: 10.1016/S1010-6030(99)00070-2
关键词:
摘要: The photoinitiation of the polymerization methylmethacrylate (MMA) by dye thionine in presence triethylamine and triethanolamine has been studied SDS micelles, compared with similar studies homogeneous methanol solutions. conversion rates micelles were significantly faster than solutions, amine concentrations at which maximum observed (∼0.7) higher (∼0.1). Association constants dye, monomer, amines to determined, as well quenching rate dye's excited states monomer these systems. An overall mechanism is proposed for production free radicals includes postulation a triplex. expression concentration initiating was deduced from this mechanism, when using experimentally determined fit data quite good up rate. At other processes may be participating process decreasing efficiency radicals.
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