@article { ISI:000263423600001,
	title = {Novel allylic phosphonium salts in free radical accelerated cationic polymerization},
	journal = {Polymer Bulletin},
	volume = {62},
	number = {3},
	year = {2009},
	month = {MAR},
	pages = {271-280},
	publisher = {SPRINGER},
	address = {233 SPRING ST, NEW YORK, NY 10013 USA},
	abstract = {<p>In the present study, the synthesis and evaluation of novel allylic phosphonium salts as addition fragmentation agents in combination of conventional (photo-/thermal) free radical source for cationic polymerization are described. The amide based allylic phosphonium salts, namely 2-(N, N-dimethylcaboxy-propenyl) triphenylphosphonium hexafluoroantimonate (DMTPH) and 2-(morpholinocarboxy-propenyl) triphenyl phosphonium hexafluoroantimonate (MTPH) were synthesized and characterized. The thermal and photo-latency of these salts was examined with and without free radical sources in bulk polymerization of cyclohexene oxide (CHO) salts at 70 A degrees C and lambda \&gt; 290 nm irradiation, respectively. In presence of thermal free radical source, the order of activity was observed as PAT \&gt; BPO \&gt; AIBN. The order of activity of free radical sources on photopolymerization was found to be benzoin \&gt; benzophenone \&gt; TMDPO. In addition, photopolymerization of other cationically polymerizable monomers (such as n-butyl vinyl ether, isobutyl vinyl ether, N-vinyl carbazole and glycidyl phenyl ether) was also examined at lambda \&gt; 290 nm irradiation. It is concluded that the rate of cationic polymerization can be accelerated using novel phosphonium salts with combination of free radical sources, by both thermal and photochemical mode.</p>},
	keywords = {Addition fragmentation agent, Cationic polymerization, Initiator, phosphonium salt, Photopolymerization},
	issn = {0170-0839},
	doi = {10.1007/s00289-008-0014-y},
	author = {Gupta, Mukesh Kumar and Singh, Raj Pal}
}
@article { ISI:000277449500003,
	title = {Novel addition-fragmentation agent in cationic photopolymerization},
	journal = {Polymer Bulletin},
	volume = {65},
	number = {1},
	year = {2010},
	month = {JUN},
	pages = {25-34},
	publisher = {SPRINGER},
	address = {233 SPRING ST, NEW YORK, NY 10013 USA},
	abstract = {<p>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 \&gt; 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.</p>},
	keywords = {Addition-fragmentation agent, Ammonium salt, Benzophenone, Cationic polymerization, Onium salt, Photopolymerization},
	issn = {0170-0839},
	doi = {10.1007/s00289-009-0182-4},
	author = {Gupta, Mukesh Kumar and Mehare, Rupali S. and Singh, Raj Pal}
}
