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Conference papers
Time-evolution of the structure of organoclay/ polypropylene nanocomposites and its influence on time/temperature superposition principle
Abstract : We investigate the rheological properties of a nanocomposite in small amplitude oscillatory shear. The evolution of the storage modulus with time shows that this material is not stable: the microstructure changes continuously with time, due to the disorientation of the clay platelets and the build-up of a 3D network. This evolution of the microstructure is evaluated by measuring the apparent yield stress. A two-step kinetics is evidenced, whose parameters directly depends on temperature. This time-evolution is generally assumed to violate the time-temperature superposition principle. However, we demonstrate that the time-temperature equivalence always exists if we consider samples having the same microstructure.
Cited literature [6 references]
https://hal-mines-paristech.archives-ouvertes.fr/hal-00674982
Contributor : Magalie Prudon <>
Submitted on : Thursday, March 1, 2012 - 4:00:28 PM
Last modification on : Thursday, September 24, 2020 - 5:22:54 PM
Long-term archiving on: : Thursday, June 14, 2012 - 5:02:30 PM
Contributor : Magalie Prudon <>
Submitted on : Thursday, March 1, 2012 - 4:00:28 PM
Last modification on : Thursday, September 24, 2020 - 5:22:54 PM
Long-term archiving on: : Thursday, June 14, 2012 - 5:02:30 PM
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PPS2011_Zouari.pdf
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