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Title: Novel silicon carbide/polypyrrole composites; preparation and physicochemical properties

Abstract

Novel silicon carbide/polypyrrole (SiC/PPy) conducting composites were prepared using silicon carbide as inorganic substrate. The surface modification of SiC was performed in aqueous solution by oxidative polymerization of pyrrole using ferric chloride as oxidant. Elemental analysis was used to determine the mass loading of polypyrrole in the SiC/PPy composites. Scanning electron microscopy showed the surface modification of SiC by PPy. PPy in composites was confirmed by the presence of PPy bands in the infrared spectra of SiC/PPy containing various amounts of conducting polymer. The conductivity of SiC/PPy composites depends on PPy content on the surface. The composite containing 35 wt.% PPy showed conductivity about 2 S cm{sup -1}, which is in the same range as the conductivity of pure polypyrrole powder prepared under the same conditions using the same oxidant. PPy in the composites was clearly detected by X-ray photoelectron spectroscopy (XPS) measurements by its N1s and Cl2p peaks. High resolution scans of the C1s regions distinguished between silicon carbide and polypyrrole carbons. The fraction of polypyrrole at the composite surface was estimated from the silicon and nitrogen levels. The combination of XPS and conductivity measurements suggests that the surface of the SiC/PPy composites is polypyrrole-rich for a conducting polymermore » mass loading of at least 12.6 wt.%.« less

Authors:
 [1];  [2];  [2];  [3]
  1. Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 842 36 Bratislava (Slovakia)
  2. Institut de Topologie et de Dynamique des Systemes (ITODYS), Universite Paris 7 Denis Diderot, CNRS (URA34), 1 rue Guy de la Brosse, 75005 Paris (France)
  3. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6 (Czech Republic)
Publication Date:
OSTI Identifier:
20889768
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 40; Journal Issue: 5; Other Information: DOI: 10.1016/j.materresbull.2005.02.010; PII: S0025-5408(05)00052-8; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON; CHEMICAL PREPARATION; ELECTRICAL PROPERTIES; NITROGEN; POLYMERS; SILICON; SILICON CARBIDES; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Omastova, Maria, Boukerma, Kada, Chehimi, Mohamed M, and Trchova, Miroslava. Novel silicon carbide/polypyrrole composites; preparation and physicochemical properties. United States: N. p., 2005. Web. doi:10.1016/j.materresbull.2005.02.010.
Omastova, Maria, Boukerma, Kada, Chehimi, Mohamed M, & Trchova, Miroslava. Novel silicon carbide/polypyrrole composites; preparation and physicochemical properties. United States. https://doi.org/10.1016/j.materresbull.2005.02.010
Omastova, Maria, Boukerma, Kada, Chehimi, Mohamed M, and Trchova, Miroslava. 2005. "Novel silicon carbide/polypyrrole composites; preparation and physicochemical properties". United States. https://doi.org/10.1016/j.materresbull.2005.02.010.
@article{osti_20889768,
title = {Novel silicon carbide/polypyrrole composites; preparation and physicochemical properties},
author = {Omastova, Maria and Boukerma, Kada and Chehimi, Mohamed M and Trchova, Miroslava},
abstractNote = {Novel silicon carbide/polypyrrole (SiC/PPy) conducting composites were prepared using silicon carbide as inorganic substrate. The surface modification of SiC was performed in aqueous solution by oxidative polymerization of pyrrole using ferric chloride as oxidant. Elemental analysis was used to determine the mass loading of polypyrrole in the SiC/PPy composites. Scanning electron microscopy showed the surface modification of SiC by PPy. PPy in composites was confirmed by the presence of PPy bands in the infrared spectra of SiC/PPy containing various amounts of conducting polymer. The conductivity of SiC/PPy composites depends on PPy content on the surface. The composite containing 35 wt.% PPy showed conductivity about 2 S cm{sup -1}, which is in the same range as the conductivity of pure polypyrrole powder prepared under the same conditions using the same oxidant. PPy in the composites was clearly detected by X-ray photoelectron spectroscopy (XPS) measurements by its N1s and Cl2p peaks. High resolution scans of the C1s regions distinguished between silicon carbide and polypyrrole carbons. The fraction of polypyrrole at the composite surface was estimated from the silicon and nitrogen levels. The combination of XPS and conductivity measurements suggests that the surface of the SiC/PPy composites is polypyrrole-rich for a conducting polymer mass loading of at least 12.6 wt.%.},
doi = {10.1016/j.materresbull.2005.02.010},
url = {https://www.osti.gov/biblio/20889768}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 5,
volume = 40,
place = {United States},
year = {Wed May 18 00:00:00 EDT 2005},
month = {Wed May 18 00:00:00 EDT 2005}
}