Reference : Influence of Al2O3 nanoparticles on the isothermal cure of an epoxy resin

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics Engineering, computing & technology : Materials science & engineering
	To cite this reference:	http://hdl.handle.net/10993/12336

Title :	Influence of Al2O3 nanoparticles on the isothermal cure of an epoxy resin
Language :	English
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 [> >]
Publication date :	2009
Journal title :	Journal of Physics : Condensed Matter
Publisher :	Institute of Physics
Volume :	21
Pages :	035118-035126
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	0953-8984
e-ISSN :	1361-648X
City :	Bristol
Country :	United Kingdom
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.
Permalink :	http://hdl.handle.net/10993/12336
DOI :	10.1088/0953-8984/21/3/035118

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