Photopolymerization of Methyl Methacrylate with N -Benzylpyridinium Thiocyanate
Kenzo Tabuchi,Naokazu Sakota +1 more
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In this article, the photopolymerization of methyl methacrylate (MMA) with N-benzyl-pyridinium thiocyanate (BPT) was studied.Abstract:
The photopolymerization of methyl methacrylate (MMA) with N-benzyl-pyridinium thiocyanate (BPT) was studied. The photopolymerization of MMA with BPT in dichloromethane gave an oligo(methyl methacrylate) (OMMA), which was presumably formed by initiation with thiocyano radical and termination with N-benzylpyridinyl radical. The photopolymerization was also accelerated by the addition of carbon tetrachloride, which captured effectively the pyridinyl radical as was also the case with N-benzylpyridinium bromide. Photopolymerization of MMA with N-benzylpyridinium chloride (BPC)–KSCN–CCl4 in an aqueous-organic two-phase was also examined. The results suggested the following BPC-recycling photo-initiation mechanism. BPT formed by the ion exchange reaction between BPC and KSCN in an aqueous layer photodecomposed to the SCN and N-benzylpyridinyl radical. The latter reacted with carbon tetrachloride to produce BPC and ·CCl3. Both ·SCN and ·CCl3 initiated the polymerization of MMA, and BPC was transferred to the aqueous layer. Photopolymerization in aqueous-organic two-phase was also remarkably accelerated in an emulsified system with sodium dodecyl sulfate or N-cetylpyridinium bromide, each of which increased the interface area between the aqueous and organic layers and facilitated the phase-transfer.read more
Citations
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Photopolymerization of methyl methacrylate with methyl viologen-Na2S2O4-CCl4 in aqueous-organic, two-phase system.
TL;DR: Aqueous-Organic, Two-phase photopolymerization of Methyl methacrylate with Methyl Viologen-Na 2 S 2 O 4 -CCl 4 in aqueous organic, two-phase system is described in this paper.
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Phase-Transfer Photopolymerization of Methyl Methacrylate with Tetrabutylammonium Chloride-KSCN-CCl4 in an Aqueous-Organic Two-Phase System.
TL;DR: In this paper, phase-transfer polymerization of Methyl Methacrylate with Tetrabutylammonium Chloride was performed in an Aqueous-Organic Two-Phase System.
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Photopolymerization of Methyl Methacrylate with 1-Benzyl-1,4-dihydronicotinamide in the Presence of Carbon Tetrachloride
TL;DR: In this paper, a photopolymerization of Methyl methacrylate with 1-Benzyl-1,4-dihydronicotinamide in the presence of carbon tetrachloride is described.
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Photopolymerization of methyl methacrylate with 1-benzyl-1,4-dihydronicotinamide.
Kenzo Tabuchi,Naokazu Sakota +1 more
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Photopolymerization of Methyl Methacrylate with Oligo(methyl methacrylate) Containing 1-Benzyl-1,4-dihydropyridine Residue
Kenzo Tabuchi,Naokazu Sakota +1 more
TL;DR: In this paper, a photopolymerization of Methyl methacrylate with Oligo(methyl methACrylate) Containing 1-Benzyl-1,4-dihydropyridine Residue
References
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Stable Free Radicals. I. Isolation and Distillation of 1-Ethyl-4-carbomethoxypyridinyl
Journal ArticleDOI
Solute-solvent interactions. II. Relative activities of anions in acetonitrile and water
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Bimolecular disappearance of pyridinyl radicals in water
Journal ArticleDOI
Photopolymerization of Methyl Methacrylate with N -Benzylpyridinium Bromide
Kenzo Tabuchi,Naokazu Sakota +1 more
TL;DR: In this article, the photopolymerization of methyl methacrylate (MMA) with N-benzylpyridinium bromide (BPB) was investigated in three different solvents, methanol, acetonitrile and methylene chloride.
Journal ArticleDOI
Photopolymerization of methyl methacrylate with N-benzyl-pyridinium bromide and chloride in the presence of 1,2-dibromoethane and carbon tetrachloride
Kenzo Tabuchi,Naokazu Sakota +1 more
TL;DR: The photopolymerization of methyl methacrylate (MMA) with N-benzyl-pyridinium bromide (BPB) and chloride (BPC) in the presence of carbon tetrachloride and 1,2-dibromoethane was carried out in dichloromethane as discussed by the authors.
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