Surface Modification of MWCNT by Friedel-Crafts Acylation

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  • ARAI Hiroki
    Graduate school of polymer science and engineering, Yamagata University
  • AWANO Hiroshi
    Graduate school of polymer science and engineering, Yamagata University
  • TAKAHASHI Tatsuhiro
    Graduate school of polymer science and engineering, Yamagata University
  • YONETAKE Koichiro
    Graduate school of polymer science and engineering, Yamagata University
  • HABA Osamu
    Graduate school of polymer science and engineering, Yamagata University

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Other Title
  • フリーデルクラフツアシル化反応を利用したＭＷＣＮＴの表面修飾
  • フリーデルクラフツ アシルカ ハンノウ オ リヨウシタ MWCNT ノ ヒョウメン シュウショク

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Abstract

To improve interfacial adhesion between multi-walled carbon nanotubes (MWCNT) and polymers, the quantitative analysis of MWCNT and its chemical modifications becomes important. MWCNTs are mainly categorized into two structures. One is a tubular type, and many layers of graphite sheets are rolled; this type is commercially available as VGCF®. The other is a cup-stacked type, and six-membered rings arranged like cups are stacked up, this type is commercially available as Carbere®. In this study, the quantitative surface analysis for the two MWCNTs, which are already graphitized (no residual of metal catalyst), by neutralization titration was carried out. COOH groups are introduced by using the Friedel-Crafts reaction on the defect parts of the two MWCNTs. The introduced amounts of carboxyl groups were determined by neutralization titration. The results suggested that about 17 carboxyl groups per 100 carbons on VGCF® surface, and about 22 carboxyl groups on Carbere® were introduced, respectively.<br>

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 65 (2), 192-195, 2008

    The Society of Polymer Science, Japan

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