Title: Photopolymerization Kinetics of Acrylate/Liquid Crystal Mixtures Initiated by Ketocoumarin/Amine/Triazine Ternary Photoinitiator
Abstract: The photopolymerization kinetics of acrylate/liquid crystal(LC) mixtures photoinitiated by 3,3′-carbonyl bis(7-diethylaminocoumarin)(KCD)/N-methyl-N,N-diethanolamine(MDEA)/2-(4-methoxy-phe-nyl)-4,6-bis(trichloromethyl)-1,3,5-triazine(TA) was studied by photo-differential scanning calorimetry equipped with 441.6 nm filters.The results indicate that adding TA into KCD/MDEA binary photoinitiator greatly increases the maximum rate of photopolymerization Rp(max) and monomer conversion.Rp(max) and the total monomer conversion increase respectively by 100% and 69% as the content of TA is 0.5%(mass fraction).Moreover,both Rp(max) and total monomer conversion increase by 2.5 and 2.8 times separately when the light intensity rises from 1.5 mW/cm2 to 35.2 mW/cm2.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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