TANSO
Online ISSN : 1884-5495
Print ISSN : 0371-5345
ISSN-L : 0371-5345
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Volume 2010, Issue 244
Displaying 1-5 of 5 articles from this issue
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Research Papers
  • Hydrogen peroxide formation on several carbon materials in sulfuric acid solution
    Taro Kinumoto, Junichi Nakamura, Kenji Kikuchi, Zempachi Ogumi
    Article type: Research Papers
    2010 Volume 2010 Issue 244 Pages 143-146
    Published: September 01, 2010
    Released on J-STAGE: October 30, 2010
    DOIhttps://doi.org/10.7209/tanso.2010.143
    JOURNAL FREE ACCESS
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    Hydrogen peroxide (H2O2) formation on Ketjen blackR EC300J, Vulcan XC-72R® and acetylene black in sulfuric acid solution was investigated. For this purpose, an ultra-microanalysis system for H2O2 was constructed. It was clarified that H2O2 was produced through an oxygen reduction reaction on these carbon materials. When oxidized acetylene blacks were employed, both the content of alcohol-like groups and the amounts of H2O2 produced increased. It is, therefore, surmised that the alcohol-like groups on acetylene blacks mainly contribute to H2O2 formation in a similar manner as the so-called “anthraquinone process”, the practical method for H2O2 production.
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  • Swelling and interfacial characterization of multi-walled carbon nanotubes/natural rubber composites
    Kenji Takeuchi, Hiroyuki Ueki, Shigeki Inukai, Satoshi Iinou, Koji Jin ...
    Article type: Research Papers
    2010 Volume 2010 Issue 244 Pages 147-152
    Published: September 01, 2010
    Released on J-STAGE: October 30, 2010
    DOIhttps://doi.org/10.7209/tanso.2010.147
    JOURNAL FREE ACCESS
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    We have studied the solvent resistance characteristics of non-cross-linked and cross-linked natural rubber composites reinforced by multi-walled carbon nanotubes (MWCNTs). All the MWCNTs were individually dispersed within the rubber matrix where a three-dimensional cellulation structure was created when the added amount of MWCNTs exceeded 16 wt%. The non-cross-linked MWCNT-filled rubber composite was not soluble, but swelled in toluene. Upon detailed studies on the dried sample, it was found that a new phase was formed due to a strong bonding between the MWCNTs and the rubber matrix resulting in the cellulation structure. We found that a continuous three-dimensional structure at the interface between the MWCNTs and the natural rubber was extremely tough, and thus contributed to the improvement in the elastic modulus and thermal stability of natural rubber composites.
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