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Novel addition-fragmentation agent in cationic photopolymerization

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Abstract

The aim of present study is to examine the photo-initiation efficiency of N,N-dimethylacrylamide-based allylic ammonium salt as one component addition-fragmentation agent (cationic photoinitiator cum radical source) in free radical accelerated cationic polymerization. Novel addition-fragmentation agent (AFA), 2-(N,N-dimethylcarboxy-3-propenyl)(phenylcarbonyl-4-phenylene) dimethyl ammonium hexafluoroantimonate (DMPDA) was synthesized as cationic photoinitiator and its initiation efficiency was examined in polymerization of cyclohexene oxide (CHO), isobutyl vinyl ether (IBVE), and n-butyl vinyl ether (n-BVE) in CH2Cl2 solvent at wavelength λ > 290 nm. The rate of polymerization increases with the increase in initiator concentration and reaction time. The results demonstrate that DMPDA acts as an efficient photoinitiator (AFA) without use of radical source in free radical accelerated cationic polymerization.

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Acknowledgments

Authors are grateful to Dr. S. Sivaram, Director, NCL, Pune for providing necessary facilities and fruitful discussions. MKG thankful to Council of Scientific and Industrial Research, New Delhi, for the award of research fellowship.

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Authors and Affiliations

  1. Polymer Science and Engineering Division, National Chemical Laboratory, Pune, 411 008, India

    Mukesh Kumar Gupta, Rupali Mehare & Raj Pal Singh

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  1. Mukesh Kumar Gupta
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  2. Rupali Mehare
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  3. Raj Pal Singh
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Correspondence to Raj Pal Singh.

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Gupta, M.K., Mehare, R. & Singh, R.P. Novel addition-fragmentation agent in cationic photopolymerization. Polym. Bull. 65, 25–34 (2010). https://doi.org/10.1007/s00289-009-0182-4

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  • DOI: https://doi.org/10.1007/s00289-009-0182-4

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