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Raman study of inhomogeneities in carbon nanotube distribution in CNT-PMMA composites
Luleå tekniska universitet.
Institut Jean Lamour, CNRS – Nancy Université.
Institut Jean Lamour, CNRS – Nancy Université.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
2010 (English)In: Physica status solidi. B, Basic research, ISSN 0370-1972, E-ISSN 1521-3951, Vol. 247, no 11-12, 2810-2813 p.Article in journal (Refereed) Published
Abstract [en]

This work is aimed at characterization of the carbon nanotube (CNT) distribution in polymethyl methacrylate (PMMA)-CNT composites by high-resolution Raman spectroscopy. In particular, we focus on study of the boundary regions between the CNT aggregates and the surrounding areas where the CNTs are well dispersed in the PMMA matrix. Different laser excitation energies (1.96 and 2.33 eV) were used to preferentially probe metallic and semiconducting SWCNTs, respectively. At both photon energies, spectral line scans across the boundary regions were performed revealing a substantial drop in intensity of G+ CNT Raman mode and an increase of the D/G+-intensity ratio. The latter testifies to a preferential dispersion of functionalized CNTs in the PMMA matrix. Certain inhomogeneities were observed by Raman spectral imaging even in the areas with well-dispersed CNTs.

Place, publisher, year, edition, pages
2010. Vol. 247, no 11-12, 2810-2813 p.
Keyword [en]
Natural sciences - Physics
Keyword [sv]
Naturvetenskap - Fysik
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Other Physics Topics
Research subject
Fysik
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URN: urn:nbn:se:ltu:diva-13476DOI: 10.1002/pssb.201000198Local ID: cb21c6a0-0010-11e0-8b95-000ea68e967bOAI: oai:DiVA.org:ltu-13476DiVA: diva2:986429
Note
Validerad; 2010; 20101205 (also)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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