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Preparation of high performance nanocomposite elastomer: effect of reaction conditions on in situ silica generation of high content in natural rubber

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Abstract

Effect of amines on an in situ silica generation in natural rubber was investigated, and n-hexylamine, n-heptylamine and n-octylamine were found to increase the in situ silica content. The nanometer sized silica particles up to ca. 80 parts per hundred rubber by weight were generated in situ in the rubber matrix via a sol–gel reaction of tetraethoxysilane. Additionally, dispersion of the silica in the rubbery matrix was more homogeneous than that of commercial silica dispersed by a conventional mechanical mixing. In this in situ silica generation, the polarity and solubility in water of amine were influential factors for controlling the in situ silica content in the rubbery matrix. The obtained high in situ silica filled natural rubber was useful to prepare high performance nanocomposite elastomers.

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Acknowledgement

This research was partially supported by Grant-in-Aid for Science Research (C) No. 19550208 from JSPS and the Research Grants from Hosokawa Powder Technology Foundation (2005) and President of KIT to Y. I.

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Author notes

  1. Sirilux Poompradub

    Present address: Faculty of Science, Department of Chemical Technology, Chulalongkorn University, Phatumwon, Bangkok, 10140, Thailand

Authors and Affiliations

  1. Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto, 606-8585, Japan

    Yuko Ikeda & Yuichi Morita

  2. Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan

    Sirilux Poompradub & Shinzo Kohjiya

  3. Faculty of Science, Department of Chemistry, Mahidol University, Salaya Campus, Phuthamonthon, Nakorn Pathom, 73170, Thailand

    Shinzo Kohjiya

Authors
  1. Yuko Ikeda
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  2. Sirilux Poompradub
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  3. Yuichi Morita
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  4. Shinzo Kohjiya
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Correspondence to Yuko Ikeda.

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Ikeda, Y., Poompradub, S., Morita, Y. et al. Preparation of high performance nanocomposite elastomer: effect of reaction conditions on in situ silica generation of high content in natural rubber. J Sol-Gel Sci Technol 45, 299–306 (2008). https://doi.org/10.1007/s10971-008-1682-7

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