Nanofabrication of sulfonated polystyrene-g-FEP with silver ion (Ag+) using ion beam direct etching and reduction

Hidehiro Tsubokura, Akihiro Oshima, Tomoko Gowa Oyama, Hiroki Yamamoto, Takeshi Murakami, Seiichi Tagawa, Masakazu Washio

    Research output: Contribution to journalArticle

    Abstract

    Functionalized poly(tetrafluoroethylene-co-hexafluoropropylene (FEP)) was fabricated by electron beam (EB) induced grafting technique and chemical sulfonation treatment. The functionalized FEP (s-FEP) films were immersed in the silver nitrate (AgNO3) solution under ambient condition, to exchange on ionic sites from proton ion-form to Ag+ ion-form, and then the Ag-formed s-FEP polymers were obtained. Ag-formed s-FEP was irradiated with 30 keV Ga+ focused ion beam (FIB) and 6 MeV/u dispersed Ne10+ ion beam (DIB). The irradiated areas were evaluated by a scanning electron microscopy (SEM) with an energy dispersive X-ray spectroscopy (EDX). In both cases of FIB and DIB irradiations, the nano-scale particles were appeared on the surface of irradiated areas. From the results of EDX analysis for the particles, the peaks which were assigned to silver atoms were clearly detected, and peak intensities were higher than un-irradiated one. It is suggested that the Ag+ ions would be reduced by ion beam irradiation and appeared as silver nano-scale particles with pure silver metal and its oxidative chemical compounds.

    Original languageEnglish
    Pages (from-to)513-516
    Number of pages4
    JournalJournal of Photopolymer Science and Technology
    Volume24
    Issue number5
    DOIs
    Publication statusPublished - 2011

    Fingerprint

    Polystyrenes
    Polytetrafluoroethylene
    Nanotechnology
    Silver
    Ion beams
    Etching
    Ions
    Focused ion beams
    Irradiation
    Sulfonation
    Chemical compounds
    Silver Nitrate
    Polytetrafluoroethylenes
    Electron beams
    Nitrates
    Ion exchange
    Protons
    Polymers
    Atoms
    Scanning electron microscopy

    Keywords

    • Metal reduction
    • Nano-particles
    • Polystyrene-g-FEP
    • SEM-EDX
    • Ton beam

    ASJC Scopus subject areas

    • Materials Chemistry
    • Polymers and Plastics
    • Organic Chemistry

    Cite this

    Nanofabrication of sulfonated polystyrene-g-FEP with silver ion (Ag+) using ion beam direct etching and reduction. / Tsubokura, Hidehiro; Oshima, Akihiro; Oyama, Tomoko Gowa; Yamamoto, Hiroki; Murakami, Takeshi; Tagawa, Seiichi; Washio, Masakazu.

    In: Journal of Photopolymer Science and Technology, Vol. 24, No. 5, 2011, p. 513-516.

    Research output: Contribution to journalArticle

    Tsubokura, Hidehiro ; Oshima, Akihiro ; Oyama, Tomoko Gowa ; Yamamoto, Hiroki ; Murakami, Takeshi ; Tagawa, Seiichi ; Washio, Masakazu. / Nanofabrication of sulfonated polystyrene-g-FEP with silver ion (Ag+) using ion beam direct etching and reduction. In: Journal of Photopolymer Science and Technology. 2011 ; Vol. 24, No. 5. pp. 513-516.
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    abstract = "Functionalized poly(tetrafluoroethylene-co-hexafluoropropylene (FEP)) was fabricated by electron beam (EB) induced grafting technique and chemical sulfonation treatment. The functionalized FEP (s-FEP) films were immersed in the silver nitrate (AgNO3) solution under ambient condition, to exchange on ionic sites from proton ion-form to Ag+ ion-form, and then the Ag-formed s-FEP polymers were obtained. Ag-formed s-FEP was irradiated with 30 keV Ga+ focused ion beam (FIB) and 6 MeV/u dispersed Ne10+ ion beam (DIB). The irradiated areas were evaluated by a scanning electron microscopy (SEM) with an energy dispersive X-ray spectroscopy (EDX). In both cases of FIB and DIB irradiations, the nano-scale particles were appeared on the surface of irradiated areas. From the results of EDX analysis for the particles, the peaks which were assigned to silver atoms were clearly detected, and peak intensities were higher than un-irradiated one. It is suggested that the Ag+ ions would be reduced by ion beam irradiation and appeared as silver nano-scale particles with pure silver metal and its oxidative chemical compounds.",
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