Article (Scientific journals)
Influence of suspension viscosity on Brownian relaxation of filler particles
Dannert, R.; Winter, H. H.; Sanctuary, Roland et al.
2017In Rheologica Acta, 56 (7-8), p. 615-622
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Keywords :
BSW spectrum Nanocomposite Brownian relaxation SAOS Glass transition Master curve hard-sphere dispersions viscoelastic behavior glass-transition frequency rheology dynamics strain Mechanics
Abstract :
[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.
Disciplines :
Physics
Author, co-author :
Dannert, R.
Winter, H. H.
Sanctuary, Roland ;  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
External co-authors :
no
Title :
Influence of suspension viscosity on Brownian relaxation of filler particles
Publication date :
2017
Journal title :
Rheologica Acta
ISSN :
0035-4511
Publisher :
Springer, Germany
Volume :
56
Issue :
7-8
Pages :
615-622
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
Available on ORBilu :
since 21 January 2020

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