01760nas a2200241 4500008004100000022001400041245007100055210006900126260005700195300001000252490000700262520094200269653003301211653001801244653001701262653002801279653001501307653002401322100002501346700002301371700002001394856010401414 2010 eng d a0170-083900aNovel addition-fragmentation agent in cationic photopolymerization0 aNovel additionfragmentation agent in cationic photopolymerizatio a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGERcJUN a25-340 v653 a
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 CH(2)Cl(2) solvent at wavelength lambda > 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.
10aAddition-fragmentation agent10aAmmonium salt10aBenzophenone10aCationic polymerization10aOnium salt10aPhotopolymerization1 aGupta, Mukesh, Kumar1 aMehare, Rupali, S.1 aSingh, Raj, Pal uhttp://library.ncl.res.in/content/novel-addition-fragmentation-agent-cationic-photopolymerization-0