Article (Scientific journals)
Influence of Al2O3 nanoparticles on the isothermal cure of an epoxy resin
Sanctuary, Roland; Krüger, Jan-Kristian; Baller, Jörg et al.
2009In Journal of Physics: Condensed Matter, 21, p. 035118-035126
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Abstract :
[en] The influence of Al2O3 nanoparticles on the curing of an epoxy thermoset based on diglycidyl ether of bisphenol A was investigated using temperature-modulated differential scanning calorimetry (TMDSC) and rheology. Diethylene triamine was used as a hardener. TMDSC not only allows for a systematic study of the kinetics of cure but simultaneously gives access to the evolution of the specific heat capacities of the thermosets. The technique thus provides insight into the glass transition behaviour of the nanocomposites and hence makes it possible to shed some light on the interaction between the nanoparticles and the polymer matrix. The Al2O3 fillers are shown to accelerate the growth of macromolecules upon isothermal curing. Several mechanisms which possibly could be responsible for the acceleration are described. As a result of the faster network growth chemical vitrification occurs at earlier times in the filled thermosets and the specific reaction heat decreases with increasing nanoparticle concentration. Rheologic measurements of the zero-shear viscosity confirm the faster growth of the macromolecules in the presence of the nanoparticles.
Disciplines :
Physics
Materials science & engineering
Identifiers :
UNILU:UL-ARTICLE-2009-040
Author, co-author :
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
Baller, Jörg ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Zielinski, Bartosz
Müller, Ulrich ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Ziehmer, Markus ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Becker, Nora
Philipp, Martine 
Language :
English
Title :
Influence of Al2O3 nanoparticles on the isothermal cure of an epoxy resin
Publication date :
2009
Journal title :
Journal of Physics: Condensed Matter
ISSN :
1361-648X
Publisher :
Institute of Physics, Bristol, United Kingdom
Volume :
21
Pages :
035118-035126
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 29 November 2013

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