%0 Journal Article
%T The payne effect: primarily polymer-related or filler-related phenomenon?
%+ Laboratoire Charles Coulomb (L2C)
%A Warasitthinon, Nadhatai
%A Genix, Anne-Caroline
%A Sztucki, Michael
%A Oberdisse, Julian
%A Robertson, Christopher G.
%< avec comité de lecture
%Z L2C:19-310
%@ 0035-9475
%J Rubber Chemistry and Technology
%I American Chemical Society
%V 92
%N 4
%P 599-611
%8 2019
%D 2019
%R 10.5254/rct.19.80441
%Z Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]Journal articles
%X The hysteretic softening at small dynamic strains (Payne effect) related to the rolling resistance and viscoelastic losses of tires was studied as a function of particle size, filler volume fraction, and temperature for carbon black (CB) reinforced uncrosslinked styrene-butadiene rubber (SBR) and a paste-like material composed of CB-filled paraffin oil. The low strain limit for dynamic storage modulus was found to be remarkably similar for CB-filled oil compared to CB-filled SBR. Small-angle X-ray scattering (SAXS) measurements on the simple composites and detailed data analysis confirmed that the aggregate structures and nature of filler branching/networking of carbon black were virtually identical within oil compared to the high molecular weight polymer matrix. The combined dynamic rheology and SAXS results provide clear evidence that the deformation-induced breaking (unjamming) of the filler network – characterized by filler-filler contacts that are percolated throughout the material – is the main cause for the Payne effect. However, the polymer matrix does play a secondary role as demonstrated by a reduction in Payne effect magnitude with increasing temperature for the CB-reinforced rubber, which was not observed to a significant extent for the oil-CB system.
%G English
%2 https://hal.science/hal-02566982/document
%2 https://hal.science/hal-02566982/file/PayneEffect_RubChemTech_HAL2019.pdf
%L hal-02566982
%U https://hal.science/hal-02566982
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021