Bulletin of the Chemical Society of Japan · 1962 · 13 citations · 8 references
Natural SciencesChemistryMaterials ScienceChemical KineticsPolymer ChemistryPolymer MaterialsOptical PolymersPolymer ProcessingPolymer SynthesisPolymerization ChemistryPolymerization KineticsPolymerization ProcessesInitiationKinetic Data AnalysisPhotopolymerizationPhotopolymerization KineticsPolymerization MechanismsPolymerization Of Vinyl MonomersUnimolecular ReactionsVinyl Polymers
Abstract Among various dyes, the dyes suitable for the sensitization of the polymerization of acrylonitrile have been determined. Acridine and xanthene dyes have been found to be the most effective. Using acridine yellow, one of the most effective, the dye-sensitized photopolymerization has been investigated in detail; it has been shown that the reaction has several features characteristic of heterogeneous polymerization, e.g., its order is higher than one-and-a-half on monomer concentration. Assuming the initiation process to be a direct interaction between excited dye and monomer, and assuming the unimolecular termination by occlusion of the propagating radicals, the kinetic data has been interpreted.
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