Reference : Anomaly in thermal and mechanical properties of SBR/alumina nanocomposites

	Document type :	Scientific congresses, symposiums and conference proceedings : Unpublished conference
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/18172

Title :	Anomaly in thermal and mechanical properties of SBR/alumina nanocomposites
Language :	English
Translated title :	[en] Anomaly in thermal and mechanical properties of SBR/alumina nanocomposites
Author, co-author :	Sushko, Rymma [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 >]
	Filimon, Marlena [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Sanctuary, Roland [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Publication date :	3-Apr-2014
Peer reviewed :	No
On invitation :	No
Audience :	International
Event name :	DPG annual conference
Event date :	from 30-03-2014 to 04-04-2014
Event organizer :	DPG
Event place (city) :	Dresden
Event country :	Italy
Keywords :	[en] polymers ; nanocomposites ; elastomers
Abstract :	[en] Filling elastomers with nanoparticles generally leads to changes in the relaxation behavior of the matrix molecules. Using dynamic mechanical analysis (DMA) and temperature modulated calorimetry (TMDSC), we investigate the influence of different amounts of untreated, hydrophilic alumina nanoparticles on the properties of a model rubber system (SBR). Beside a reinforcement effect seen in the complex elastic moduli, small amounts of nanoparticles of about 2 wt% interestingly lead to an acceleration of the relaxation modes responsible for the thermal glass transition. This leads to a minimum in the glass transition temperature as a function of nanoparticle content in the vicinity of this critical concentration. The frequency dependent elastic moduli are used to discuss the possible reduction of the entanglement of rubber molecules as one cause for this unexpected behavior.
Funders :	Fonds National de la Recherche - FnR
Name of the research project :	F1R-PHY-PFN-09MS17 > FNR/C09/MS/17 SIMOP > > SANCTUARY Roland
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/10993/18172

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