Reference : Complex specific heat capacity of two nanocomposite systems
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Physical, chemical, mathematical & earth Sciences : Physics
Engineering, computing & technology : Materials science & engineering
Complex specific heat capacity of two nanocomposite systems
Sanctuary, Roland mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Baller, Jörg mailto [Fachrichtung 7.2, Experimentalphysik, Universität des Saarlandes, Gebäude 38, D-66041 Saarbrücken, Germany]
Krüger, Jan-Kristian mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Schaefer, D. [Institut für Verbundwerkstoffe GmbH, Erwin-Schrödinger-Strasse, Universität Kaiserslautern, D-67663 Kaiserslautern, Germany]
Bactavatchalou, R. [Fachrichtung 8.4, Werkstoffwissenschaften, Universität des Saarlandes, Gebäude 22, D-66041 Saarbrücken, Germany]
Wetzel, Berndt [Laboratoire de Physique des Milieux Ionisés et Applications, CNRS-UMR 7040, Université Henri Poincaré, Nancy I, F-54506 Nancy, France]
Possart, Wulff [> >]
Alnot, Patrick [> >]
Thermochimica Acta
Rob van Daalen Publishing Editor Physical & Theoretical Chemistry Elsevier B.V. Radarweg 29 1043 NX Amsterdam The Netherlands Fax: +31-20-485-2623
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[en] Nanocomposite ; Glass transition ; TMDSC ; Complex specific heat capacity ; Viscosity ; DGEBA ; Nanoparticle
[en] Thermal investigations on two selected model-nanocomposites have been made. They differ with regard to the type of the anorganic nanoparticles that have been filled into an organic oligomer matrix. The properties of nanocomposites may vary between those of a simple mixture of independent components and those of a system, where specific interfacial interactions between the constituting parts lead to ‘new’ properties. Depending on the type of the nanoparticles filled into the matrix, the resulting properties might be closer to one or to the other extreme. We used temperature modulated differential scanning calorimetry (TMDSC) to investigate a matrix of the oligomer diglycidyl ether of bisphenol A (DGEBA) filled either with SiO2- or Al2O3-nanoparticles. The dependence of the complex specific heat capacity () on the concentration of nanoparticles shows a clear difference between the two systems as far as the glass transition of the oligomer is concerned. The SiO2 composite seems to behave more like a simple mixture, whereas the Al2O3 composite shows ‘new’ properties.
10.1016/j.tca.2005.05.024 origin=fedsrf& view=basic& eid=2-s2.0-33744814089

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