【Original Contribution】Preparation and Permeation Properties of Cellulose Acetate Membranes Blending–Acetylated–Cyclodextrins

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  • Yamazaki Hirohito
    Department of Chemical & Biological Engineering, National Institute of Technology, Ube College
  • Yamamoto Yuma
    Department of Chemical & Biological Engineering, National Institute of Technology, Ube College
  • Hamahara Shiho
    Department of Chemical & Biological Engineering, National Institute of Technology, Ube College
  • Masuda Tomoya
    Department of Environmental Science and Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University
  • Kumakiri Izumi
    Department of Environmental Science and Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University
  • Tanaka Kazuhiro
    Department of Environmental Science and Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University
  • Kita Hidetoshi
    Department of Environmental Science and Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University

Bibliographic Information

Other Title
  • 【原著】アセチル化CD含有酢酸セルロース膜の製膜と透過物性
  • アセチル化CD含有酢酸セルロース膜の製膜と透過物性
  • アセチルカ CD ガンユウ サクサン セルロースマク ノ セイマク ト トウカ ブッセイ

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Abstract

In this study, we focused on acetylated–cyclodextrins (AcCD) as a microporous material to improve the performance of cellulose acetate (CA) membrane. Separation membranes, CA/AcCD, were prepared by adding AcCD to CA up to 50 wt%. Permeability coefficients (P) and ideal separation factor of CA/AcCD were determined by the vacuum time-lag method at 2 atm and 35 ℃ for He, H2, O2, N2, CH4 and CO2 gases. CA/AcCD was obtained as a transparent membrane with a thickness of 14 ～ 47 μm. Permeability coefficients of CA/AcCD was high compared to CA membrane, especially for methane having the largest kinetic diameter among the measured gases. Gas permeability was investigated using AcCD closed the pores with molecular inclusion, and it was found that the gas did not permeate the micropore of CD contained in the membrane. Thus, it was considered that the increase in the P values by the addition of AcCD was caused by the increase in the diffusivity coefficients due to the expansion of the gap between the polymer chains.

Journal

  • MEMBRANE

    MEMBRANE 43 (5), 238-245, 2018

    THE MEMBRANE SOCIETY OF JAPAN

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