Reference : Influence of suspension viscosity on Brownian relaxation of filler particles
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/41832
Influence of suspension viscosity on Brownian relaxation of filler particles
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Dannert, R. [> >]
Winter, H. H. [> >]
Sanctuary, Roland André mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
Baller, Jörg mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
2017
Rheologica Acta
56
7-8
615-622
Yes (verified by ORBilu)
International
0035-4511
[en] BSW spectrum Nanocomposite Brownian relaxation SAOS Glass transition Master curve hard-sphere dispersions viscoelastic behavior glass-transition frequency rheology dynamics strain Mechanics
[en] Brownian relaxation caused by Brownian movement of particles in suspensions can macroscopically be probed by small-amplitude oscillatory shear experiments. Phenomenological considerations suggest a direct proportionality between suspension viscosity and Brownian relaxation times. To verify this relation experimentally, a set of nanocomposite suspensions with viscosities varying over five decades is presented. The suspensions are chosen in a way to ensure that particle-particle interactions and average particle-particle distances are identical so that they can be used as a model system to study the mere influence of suspension viscosity on Brownian relaxation. The suggested linear relationship between suspension viscosity and Brownian relaxation time can be confirmed. Moreover, a verification of a recently introduced characteristic timescale for Brownian relaxation is presented.
http://hdl.handle.net/10993/41832
10.1007/s00397-017-1019-y

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