Étude, synthèse et élaboration de nanocharges biphasées, nanotubes de carbone/diatomées pour l’amélioration des propriétés physiques de nanocomposites à matrice polymère

Abstract : This thesis is part of the GREENANONANO project ensuing from a partnership between the Luxembourg Institute of Science and Technology (LIST), Goodyear Company and Université de Lorraine, in order to address a technological challenge for increasing tires performances. The latter are directly related to the viscoelastic properties of the rubber used in tires. This gum is a composite material made by mixing an elastomeric matrix (natural rubber) and fillers (silica and carbon black). Nowadays, the filler dispersion is not optimal, which degrades the mechanical and electrostatic properties and therefore performances of tires. All these industrial limitations require the use of other types of reinforcing agents such as carbon nanotubes. Since carbon nanotubes tend to be organized into bundles, the dispersion problem still exists. We therefore propose in this thesis the synthesis of a biphased material composed by diatomite particles (natural mesoporous silica) on which are grown carbon nanotubes (CNTs). The high surface area of diatomite offers the possibility of growing a high density of CNTs, increasing the contact area with the polymer matrix. This multidisciplinary thesis started with the synthesis of metal nanoparticles by Atomic Layer Deposition (ALD) to catalyse the growth of CNTs and then a process was developed to grow CNTs on diatomite particles. The successful integration of the resulting biphased particles in polymer matrices (elastomer, thermoplastic) allowed to measure the mechanical, thermal and electrical properties of the nanocomposites thus produced
Document type :
Theses
Complete list of metadatas

Cited literature [152 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/tel-01754641
Contributor : Thèses Ul <>
Submitted on : Friday, March 30, 2018 - 9:55:51 AM
Last modification on : Tuesday, August 21, 2018 - 9:46:04 AM

File

DDOC_T_2015_0326_SARR.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01754641, version 1

Citation

Mouhamadou Moustapha Sarr. Étude, synthèse et élaboration de nanocharges biphasées, nanotubes de carbone/diatomées pour l’amélioration des propriétés physiques de nanocomposites à matrice polymère. Autre. Université de Lorraine, 2015. Français. ⟨NNT : 2015LORR0326⟩. ⟨tel-01754641⟩

Share

Metrics

Record views

73

Files downloads

213