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- Title
Photopolymerization of bis-aromatic and alicyclic based solid urethane acrylate macromonomer in the presence of large excess of reactive diluent.
- Authors
Harikrishna, R.; Ponrathnam, S.; Rajan, C.; Tambe, S.
- Abstract
A solid urethane acrylate macromonomer with bis-aromatic as well as alicyclic moieties was synthesized and the kinetics of photopolymerization reactions were studied in the presence of varying concentration of photoinitiator and large excess of reactive diluent using photo DSC. The studies show that the rate of maximum polymerization was found to increase with increase in concentration of photoinitiator while a decrease was observed by an increase in temperature. The final conversion showed a decrease at highest isothermal condition due to vitrification. Estimation of kinetic parameters including applicability of autocatalytic and modified autocatalytic models were investigated by nonlinear regression. It was observed that the modified models gave a better fit with the experimental data and kinetic parameters showed a decrease with increase in temperature and an increase with increase in concentration of photoinitiator.
- Subjects
PHOTOPOLYMERIZATION kinetics; AROMATIC compounds; ACRYLATES; MONOMERS; AUTOCATALYSIS; TEMPERATURE effect
- Publication
Journal of Thermal Analysis & Calorimetry, 2013, Vol 112, Issue 2, p805
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-012-2619-5