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Materials 2018, 11(8), 1358;

POSS Nanofiller-Induced Enhancement of the Thermomechanical Properties in a Fluoroelastomer Terpolymer

Laboratoire de Mécanique Gabriel Lamé, Université de Tours, Université d’Orléans, INSA Centre Val de Loire, Polytech Tours, 7 avenue Marcel Dassault BP40, 37004 Tours, France
Laboratoire PCM2E (Physico-Chimie des Matériaux et des Electrolytes pour l’Energie), Université de Tours, Parc de Grandmont, 37200 Tours, France
Zodiac Aerosafety Systems, 20 avenue Georges Pompidou, 37600 Loches, France
Author to whom correspondence should be addressed.
Received: 3 July 2018 / Revised: 2 August 2018 / Accepted: 3 August 2018 / Published: 6 August 2018
(This article belongs to the Special Issue Polymer Blends and Compatibilization 2018)
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The present study reports on the use of three types of polyhedral oligomeric silsesquioxanes (POSS) nanoparticles with various organic substituents as fillers in a fluoroelastomer (FKM). A series of/POSS elastomer composite thin films is prepared. Microstructural SEM/TEM (scanning electron microscopy/transmission electron microscopy) imaging reveals a dispersion state allowing the presence of micron-sized domains. The influence of POSS content is studied in order to optimize thermal stability and mechanical properties of the composite thin films. Both POSS-A (with an acryloyl functional group and seven isobutyl substituents) and POSS-P (with eight phenyl substituents) lead to higher thermal stability and modulus of the composites, with respect to the unfilled FKM terpolymer matrix. covalent grafting of POSS-A onto the FKM network is found to play a critical role. Enhanced storage modulus in the rubbery plateau region (+210% at 200 °C for 20 phr) suggests that POSS-A is particularly suitable for high temperature applications. View Full-Text
Keywords: POSS; nanofillers; FKM; rubber; terpolymer; thermomechanical properties POSS; nanofillers; FKM; rubber; terpolymer; thermomechanical properties

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Berthier, D.; Deffarges, M.-P.; Berton, N.; Venin, M.; Lacroix, F.; Schmaltz, B.; Tendron, Y.; Pestel, E.; Tran-Van, F.; Méo, S. POSS Nanofiller-Induced Enhancement of the Thermomechanical Properties in a Fluoroelastomer Terpolymer. Materials 2018, 11, 1358.

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