Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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Materials Map under construction

The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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Lalire, Thibaut

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (7/7 displayed)

  • 2024Electrical properties of graphene/multiphase polymer nanocomposites: A review40citations
  • 2023Chemical modification strategies for the control of graphene localization in PS/PMMA blend8citations
  • 2022Correlation between multiple chemical modification strategies on graphene or graphite and physical / electrical properties9citations
  • 2022Effect of modified graphene localization in PMMA/PS nanocomposites on electrical propertiescitations
  • 2021Graphene and graphite chemical modifications to perform electrical conductive polymer nanocompositescitations
  • 2021Control of graphene localization in co-continuous PMMA/PS polymer blends via chemical modification for electrical applicationcitations
  • 2021Chemical modification impact of graphene or graphite in conductive nanocomposite morphology controlcitations

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Chart of shared publication
Longuet, Claire
6 / 24 shared
Taguet, A.
5 / 31 shared
Roux, Jean Claude
1 / 2 shared
Otazaghine, Belkacem
5 / 32 shared
Taguet, Aurélie
1 / 17 shared
Chart of publication period
2024
2023
2022
2021

Co-Authors (by relevance)

  • Longuet, Claire
  • Taguet, A.
  • Roux, Jean Claude
  • Otazaghine, Belkacem
  • Taguet, Aurélie
OrganizationsLocationPeople

conferencepaper

Chemical modification impact of graphene or graphite in conductive nanocomposite morphology control

  • Lalire, Thibaut
Abstract

National audience ; Carbon fillers are used for nanocomposite application in order to improve mechanical, thermal and electrical properties of polymers [1,2,3]. The last decade, graphene attracted much attention thanks to its 2D structure, high aspect ratio and high surface area. These intrinsic properties made it one of the most promising filler for the development of high added-value polymer nanocomposites. However, as graphene nanoparticles are difficult to disperse in polymer matrices, they must be incorporated in high amounts in order to create a percolation network and to obtain high electrical conductivities. Chemical modification is one of the solutions to improve the dispersion of graphene. Moreover, by controlling the graphene chemical modification to it is possible to orient its localization in an immiscible polymer blend.The present study is focusing first on the chemical modification influence of graphene and graphite on their structure (exfoliation, new covalent bonds). TGA, FTIR and Py-GC/MS characterization proved the chemical modification. XRD showed the structure modification with the intercalation of oxygenated groups and confirmed the exfoliation. Raman spectroscopy revealed high defect concentration due to the strong oxidation and formation of sp3 carbon. Then, these modified graphene and graphite were dispersed in a co-continuous PMMA/PS polymer blend. Due to the immiscibility of PMMA and PS polymers, an interface is formed during the melt blending. The aim is to allow the localization of the graphene platelets at the continuous interface by their surface modification. By placing graphene platelets at the interface, the percolation threshold is decreased [4]. Moreover, this localization at the interface is facilitated by the high exfoliation degree that tends to improve the flexibility of graphene particles. To reach the interface localization, graphene was first oxidized and then functionalized with a copolymer of methyl methacrylate and hydroxyethyl methacrylate (P(MMA-co-HEMA)). Then, ...

Topics
  • nanoparticle
  • nanocomposite
  • impedance spectroscopy
  • dispersion
  • surface
  • Carbon
  • x-ray diffraction
  • atomic force microscopy
  • melt
  • mass spectrometry
  • thermogravimetry
  • defect
  • casting
  • copolymer
  • Raman spectroscopy
  • polymer blend
  • pyrolysis gas chromatography