Fast and clean functionalization of MWCNTs by DBD plasma and its influence on mechanical properties of C–epoxy composites

K, Krushnamurty and I, Srikanth and G H, Rao and P S R, Prasad and P, Ghosal and Ch, Subrahmanyam (2015) Fast and clean functionalization of MWCNTs by DBD plasma and its influence on mechanical properties of C–epoxy composites. RSC Advances (77). pp. 62941-62945. ISSN 2046-2069

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Abstract

Multiwalled carbon nanotubes (MWCNTs) were functionalized under helium/air plasma and the surface characteristics were compared with that of chemical functionalization. Changes in surface functional groups of MWCNTs due to plasma/chemical treatment were estimated by using temperature programmed decomposition (TPD), elemental analysis, Raman spectroscopy and BET surface area analysis. Raman spectroscopic studies highlighted that chemical functionalization increases the degree of disorder for MWCNTs when compared to plasma treatment. TPD also confirmed that air plasma treatment leads to the highest number of acidic groups on the surface that decomposes to evolve carbon dioxide. The modified MWCNTs were used as additional reinforcements to fabricate carbon fiber reinforced plastics (CFRPs). It has been observed that air plasma treated MWCNTs improved the tensile and flexural strength of C–epoxy composites significantly as compared to conventional chemical functionalization, whereas the best performance of air plasma treated MWCNTs is due to higher acid functional groups on the surface, which improves interface compatibility between the MWCNTs to the epoxy matrix.

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IITH Creators:
IITH CreatorsORCiD
Ch, SubrahmanyamUNSPECIFIED
Item Type: Article
Additional Information: Mr Anil Kumar and his co-workers (Advanced Systems Laboratory-DRDO Hyderabad) for their constant support. KM thankful to UGC-New Delhi for grant of fellowship.
Subjects: ?? sub5.8 ??
Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 11 Aug 2015 09:44
Last Modified: 11 Aug 2015 09:44
URI: http://raiith.iith.ac.in/id/eprint/1843
Publisher URL: http://dx.doi.org/10.1039/C5RA08469E
OA policy: http://www.sherpa.ac.uk/romeo/issn/2046-2069/
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