Abstract
The photopolymerization of 1-allyloxa-3-(carbazol-9-yl)-2-propanol glycidyl ether (ACPGE) and 1-(carbazol-9-yl)-4-oxa-2-pentanol glycidyl ether (COPGE) with cyclopropyldiphenylsulphonium tetrafluoroborate and tropylium hexafluorophosphate is reported. Oligomers with a degree of polymerization of 9–19 were obtained in the photopolymerization of ACPGE with these salts. The photopolymerization of COPGE yielded oligomers with a degree of polymerization of 4–5. The behaviour of tropylium and sulphonium salts is discussed. Tropylium hexafluorophosphate initiates both the photopolymerization of carbazolyloxiranes and the cationic polymerization of unsaturated monomers. Cyclopropyldiphenylsulphonium tetrafluoroborate acts exclusively as a photoinitiator.
Published Version
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