Abstract
AbstractPhotoinduced polymerization of acrylonitrile and acrylamide in the presence of Fe(III) salt and saccharide was studied in aqueous solution. The effect of various Fe(III) salts on the rate of polymerization was found to be in the following order: Fe(III) nitrate, perchlorate and chloride > Fe(III) ammonium sulfate > potassium ferricyanide. On the other hand, the effect of neutral salts such as sodium nitrate, chloride and perchlorate on the rate of polymerization was negligibly small. The maximal rate of the photopolymerization attained at the pH region of about 2 to 3, and the rate of Fe(III) ion consumption determined spectrophotometrically revealed also a maximum in the same pH region. From these results, initiating species of the photopolymerization was discussed.
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