Development of Novel Ion-Exchange Membranes for Electrodialysis of Seawater Prepared by Electron-Beam-Induced Graft Polymerization<br>(III) Co-Graft Polymerization of Glycidyl Methacrylate and Divinylbenzene onto High-Density Polyethylene Film

DOI Web Site 16 References
  • Asari Yuki
    Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University
  • Miyazawa Tadashi
    Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University
  • Miyoshi Kazuyoshi
    Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University
  • Umeno Daisuke
    Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University
  • Saito Kyoichi
    Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University
  • Nagatani Takeshi
    Research Institute of Salt and Sea Water Science, the Salt Industry Center of Japan
  • Yoshikawa Naohito
    Research Institute of Salt and Sea Water Science, the Salt Industry Center of Japan

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Other Title
  • 電子線グラフト重合法による製塩用新規イオン交換膜の開発<br>（第3報）高密度ポリエチレン製フィルムへのグリシジルメタクリレートおよびジビニルベンゼンの共グラフト重合
  • 電子線グラフト重合法による製塩用新規イオン交換膜の開発(第3報)高密度ポリエチレン製フィルムへのグリシジルメタクリレートおよびジビニルベンゼンの共グラフト重合
  • デンシセン グラフト ジュウゴウホウ ニ ヨル セイエンヨウ シンキ イオン コウカン マク ノ カイハツ ダイ3ポウ コウミツド ポリエチレンセイ フィルム エ ノ グリシジルメタクリレート オヨビ ジビニルベンゼン ノ キョウ グラフト ジュウゴウ

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Glycidyl methacrylate (GMA), an epoxy-group-containing monomer, was graft-polymerized onto a high-density polyethylene (HDPE) film with a thickness of 35μm. Divinyl benzene (DVB) was co-grafted as a cross-linker. Toluene used as a solvent of a mixture of GMA and DVB provided a uniform density of the grafted polymer chain across the membrane. Subsequently, the produced epoxy group was converted into anion and cation-exchange groups by a reaction with trimethylammonium chloride and sodium sulfite, respectively. The resultant anion- and cation- exchange membranes exhibited 0.55 and 0.34Ωcm2, respectively, which were lower membrane resistances with ion-exchange capacity comparable to commercially available ion-exchange membranes. The highest brine concentration of 3.7mol/L for electrodialysis of 0.50mol/L sodium chloride as a model seawater was attained using the ion-exchange membranes prepared from GMA/DVB-co-grafted membranes with a DVB mole percentage of 1.0mol%.

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