[en] A combination of infrared spectroscopy and high performance refractometry was used to investigate the chemically induced sol-gel and glass transition during the polymerization of epoxies. Representations of the refractive index versus chemical conversion reveal an interesting insight in the optical properties accompanying gelation and vitrification. Whereas the electronic polarizability of the liquid state of small average molecular mass and the glassy state is dominated by the mass density, an unexpected excess polarizability observed during the gelation is attributed to cooperative dipole-dipole interactions.
Disciplines :
Physics Materials science & engineering
Identifiers :
UNILU:UL-ARTICLE-2011-091
Author, co-author :
Müller, Ulrich ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Philipp, Martine ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Gervais, P. C. ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Possart, Prof Dr Wulff; Fachbereich Werkstoffwissenschaften, Universität des Saarlandes, Germany
Wehlack, C.; Fachbereich Werkstoffwissenschaften, Universität des Saarlandes, Germany
Kieffer, J.; Department of Materials Science and Engineering, University Michigan, United States
Sanctuary, Roland ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Krüger, Jan-Kristian ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Language :
English
Title :
Combination of high performance refractometry and infrared spectroscopy as a probe for chemically induced gelation and vitrification of epoxies
