Synthesis of a 12-membered cyclic siloxane possessing alkoxysilyl groups as a nanobuilding block and its use for preparation of gas permeable membranes

Masashi Yoshikawa, Hiroya Shiba, Masakoto Kanezashi, Hiroaki Wada, Atsushi Shimojima, Toshinori Tsuru, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    A 12-membered cyclic siloxane possessing alkoxysilyl groups was synthesized as a nanobuilding block for siloxane-based materials by the alkoxysilylation of organometallasiloxane containing a 12-membered ring with Si-Me and Si-O- groups as the side groups. The cyclic structure was retained not only in the hydrolysis and condensation reactions (sol-gel process) of the alkoxysilyl groups but also in the xerogel and membrane preparation processes. The degree of condensation of the xerogel derived from the 12-membered ring siloxane was higher than that derived from alkoxysilane monomers, indicating that the alkoxysilylated cyclic oligosiloxane is useful for controlling siloxane networks. A membrane composed of the cyclic siloxane was prepared by coating the hydrolyzed solution onto a porous alumina tube for evaluating the gas permeation properties. The membrane showed a molecular sieving effect for H2/SF6.

    Original languageEnglish
    Pages (from-to)48683-48691
    Number of pages9
    JournalRSC Advances
    Volume7
    Issue number77
    DOIs
    Publication statusPublished - 2017

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    Gas permeable membranes
    Siloxanes
    Xerogels
    Membranes
    Condensation reactions
    Permeation
    Sol-gel process
    Condensation
    Hydrolysis
    Alumina
    Monomers
    Aluminum Oxide
    Coatings
    Gases

    ASJC Scopus subject areas

    • Chemistry(all)
    • Chemical Engineering(all)

    Cite this

    Synthesis of a 12-membered cyclic siloxane possessing alkoxysilyl groups as a nanobuilding block and its use for preparation of gas permeable membranes. / Yoshikawa, Masashi; Shiba, Hiroya; Kanezashi, Masakoto; Wada, Hiroaki; Shimojima, Atsushi; Tsuru, Toshinori; Kuroda, Kazuyuki.

    In: RSC Advances, Vol. 7, No. 77, 2017, p. 48683-48691.

    Research output: Contribution to journalArticle

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    abstract = "A 12-membered cyclic siloxane possessing alkoxysilyl groups was synthesized as a nanobuilding block for siloxane-based materials by the alkoxysilylation of organometallasiloxane containing a 12-membered ring with Si-Me and Si-O- groups as the side groups. The cyclic structure was retained not only in the hydrolysis and condensation reactions (sol-gel process) of the alkoxysilyl groups but also in the xerogel and membrane preparation processes. The degree of condensation of the xerogel derived from the 12-membered ring siloxane was higher than that derived from alkoxysilane monomers, indicating that the alkoxysilylated cyclic oligosiloxane is useful for controlling siloxane networks. A membrane composed of the cyclic siloxane was prepared by coating the hydrolyzed solution onto a porous alumina tube for evaluating the gas permeation properties. The membrane showed a molecular sieving effect for H2/SF6.",
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    AU - Yoshikawa, Masashi

    AU - Shiba, Hiroya

    AU - Kanezashi, Masakoto

    AU - Wada, Hiroaki

    AU - Shimojima, Atsushi

    AU - Tsuru, Toshinori

    AU - Kuroda, Kazuyuki

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