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Chemical modification of carbon fibres by esterification —optimization of fibre pretreatment

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Abstract

Electrochemically oxidized PAN-based carbon fibres were modified by attachment of anm-dinitrobenzene group. Chemical modification was performed by esterification of the −OH groups of the oxidized carbon surface with 3,5-dinitrobenzoyl chloride. The higher modification extent was achieved in the case of d.c. oxidized carbon fibres, which bear a large number of −OH groups. The attachment of the dinitrobenzene species was supported by cyclic voltammetry carried out on the modified carbon fibre electrodes in aqueous solutions. The quantity of attachedm-dinitrobenzene groups was determined polarographically, after hydrolysis of the esteric bonds; it corresponds to a charge density of ca 0.2 kAh kg−1 carbon fibres, which is of the order of magnitude of battery electrodes.

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Authors and Affiliations

  1. Institute of Physical Chemistry, Aristotelian University, Thessaloniki, Greece

    P. D. Jannakoudakis, A. D. Jannakoudakis & E. Theodoridou

  2. Institute of Inorganic Chemistry, Westfälische Wilhelms-University, Münster, FRG

    J. O. Besenhard

Authors
  1. P. D. Jannakoudakis
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  2. A. D. Jannakoudakis
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  3. E. Theodoridou
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  4. J. O. Besenhard
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Jannakoudakis, P.D., Jannakoudakis, A.D., Theodoridou, E. et al. Chemical modification of carbon fibres by esterification —optimization of fibre pretreatment. J Appl Electrochem 19, 341–344 (1989). https://doi.org/10.1007/BF01015233

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  • DOI: https://doi.org/10.1007/BF01015233

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