Polypyrrole/montmorillonite and polypyrrole/ghassoul intercalates as a source of graphite and multi-layer graphene: preparation of nanocomposites exhibiting strongly anisotropic electrical conductivity

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F21%3A10247452" target="_blank" >RIV/61989100:27360/21:10247452 - isvavai.cz</a>
Alternative codes found
RIV/44555601:13440/21:43896327 RIV/61989100:27640/21:10247452 RIV/61989100:27710/21:10247452
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0025540821002269" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0025540821002269</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.materresbull.2021.111429" target="_blank" >10.1016/j.materresbull.2021.111429</a>

Result language
angličtina
Original language name
Polypyrrole/montmorillonite and polypyrrole/ghassoul intercalates as a source of graphite and multi-layer graphene: preparation of nanocomposites exhibiting strongly anisotropic electrical conductivity
Original language description
Nanocomposite tablets containing graphite and multi-layer graphene formed from polypyrrole (PPy) in the presence of Na-montmorillonite (Mt) and Moroccan clay ghassoul (Gha) were prepared by the calcination of PPy/Mt and PPy/Gha intercalates in argon at 1300 oC. XPS, XRD, Raman, and TEM analyses confirmed that PPy can serve as a precursor of graphite and multi-layer graphene. Although the calcined tablets PPy/Mt(c) and PPy/Gha(c) contain ~ 1/3 of the carbon content compared to a calcined PPy tablet (PPy(c)), the mean values of in-plane electrical conductivity (2476 S/m for PPy/Mt(c) and 2289 S/m for PPy/Gha(c)) are higher than 1837 S/m obtained for PPy(c). Strong anisotropy in electrical conductivity (three orders of magnitude) was achieved for PPy/Mt(c) and PPy/Gha(c) tablets. The similar conductivity, as well as density, porosity, and hardness of PPy/Mt(c) and PPy/Gha(c), demonstrate that Mt and Gha in conjunction with PPy are suitable for the preparation of nanocomposites with strongly anisotropic electrical conductivity.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20500 - Materials engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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