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Anomaly in thermal and mechanical properties of SBR/alumina nanocomposites
Sushko, Rymma; Baller, Jörg; Filimon, Marlena et al.
2014DPG annual conference
 

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Keywords :
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.
Disciplines :
Physics
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
Language :
English
Title :
Anomaly in thermal and mechanical properties of SBR/alumina nanocomposites
Alternative titles :
[en] Anomaly in thermal and mechanical properties of SBR/alumina nanocomposites
Publication date :
03 April 2014
Event name :
DPG annual conference
Event organizer :
DPG
Event place :
Dresden, Italy
Event date :
from 30-03-2014 to 04-04-2014
Audience :
International
Name of the research project :
F1R-PHY-PFN-09MS17 > FNR/C09/MS/17 SIMOP > > SANCTUARY Roland
Funders :
FNR - Fonds National de la Recherche [LU]
Available on ORBilu :
since 03 October 2014

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