Characterization of Novel Weak Amphoteric Charged Membranes Using ζ-Potential Measurements:  Effect of Dipolar Ion Structure

DOI Web Site 被引用文献2件
  • Hidetoshi Matsumoto
    Department of Organic and Polymeric Materials and International Research Center of Macromolecular Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan, and Department of Home Economics, Otsuma Women's University, 12 Sanban-cho, Chiyoda-ku, Tokyo 102-8357, Japan
  • Yoshiyuki Koyama
    Department of Organic and Polymeric Materials and International Research Center of Macromolecular Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan, and Department of Home Economics, Otsuma Women's University, 12 Sanban-cho, Chiyoda-ku, Tokyo 102-8357, Japan
  • Akihiko Tanioka
    Department of Organic and Polymeric Materials and International Research Center of Macromolecular Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan, and Department of Home Economics, Otsuma Women's University, 12 Sanban-cho, Chiyoda-ku, Tokyo 102-8357, Japan

書誌事項

公開日
2001-05-01
DOI
  • 10.1021/la001706+
公開者
American Chemical Society (ACS)

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説明

Weak amphoteric charged membranes were prepared by the radiation-induced graft copolymerization of the weakly charged poly(ethylene glycol) derivatives onto high-density polyethylene porous membranes. In this study, two kinds of amphoteric charged membranes, which are the amphoteric ion-pair side chain type and the mixed grafted chain type, were prepared and then characterized using the ζ-potential measurements. For the amphoteric ion-pair type membrane, the ζ-potential/pH profile showed a plateau in the range of pH 6−11 which was characteristic of the dipolar ion structure of an amphoteric ion-pair. On the other hand, the ζ-potential for the mixed grafted chain type membrane showed an intermediate pH dependence between the separate positively charged chain- and negatively charged chain-grafted membranes. The apparent surface charge density on these membranes was obtained from the ζ-potential. For the amphoteric ion-pair side chain type membrane, the experimental results could be explained by the theoreti...

収録刊行物

  • Langmuir

    Langmuir 17 (11), 3375-3381, 2001-05-01

    American Chemical Society (ACS)

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