Abstract
The photopolymerization of acrylamide sensitized by 2,3-butanedione (biacetyl: BA) was investigated in the presence of three surfactants with different types of hydrophilic groups. The rates of polymerization (Rp) in micellar solutions increased markedly by a factor of 3 to 4 in comparison with those in aqueous solutions, but the molecular weights of the polymers obtained (Mn) varied only slightly. In enough KSCN to quench the phosphorescence of BA, three surfactants showed their characteristic effects on the polymerizations depending on the nature of the hydrophilic head-groups. These findings are discussed and explained in terms of effects due to the incorporation of excited BA into micelles and electrostatic interactions of the charged radical species with the micellar surface.
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Iwai, K., Matoike, A., Nishimuta, K. et al. Micellar Effects on the Photopolymerization of Acrylamide Sensitized by 2,3-Butanedione. Polym J 21, 361–367 (1989). https://doi.org/10.1295/polymj.21.361
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DOI: https://doi.org/10.1295/polymj.21.361