Cationic Photopolymerization of 1, 2-Epoxy-6-(9-carbazolyl)-4-oxahexane Initiated by Sulfonium Salt and Iron Arene Complex |
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| Authors: | Rüta Lazauskaité Rüta Budreckiené Juozas V. Gražulevičius Prof. Dr. Marc J. M. Abadie |
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| Affiliation: | 1. Kaunas/Lithuania, Department of Organic Technology, Chemical Engineering Faculty, Kaunas University of Technology;2. Montpellier/France, Laboratory of Polymer Science & Advanced Organic Materials LEMP/MAO, University Montpellier 2, Science and Technology of Languedoc |
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| Abstract: | The photopolymerization of 1,2-epoxy-6-(9-carbazolyl)- 4-oxahexane (ECOH) initiated with dual function sulfonium salt bis [4(diphenylsulfonio)-phenyl] sulfide-bishexafluoroantimonate (Cyracure ® UVI 6974) and ( η5-2,4-cyclopentadien- 1-yl) [(1,2,3,4,5,6-η)-(1-methylethyl)benzene]-iron (+)-hexafluorophosphate (—1) (Irgacure ® 261) has been studied. Higher rate constant values and degrees of polymerization are established for the ECOH photopolymerization initiated with Cyracure ® compared with those obtained using Irgacure ® . The influence of temperature on the rate of ECOH photopolymerization, molecular weight and conversion limit is discussed. The activation energy for the photopolymerization of ECOH with the sulfonium salt has been established. |
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| Keywords: | Photochemistry Polymerizations Carbazole Iron arene complex Sulfonium salt |
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