Facilitated oxygen transport in poly(alkylmethacrylate-co-vinylimidazole)-cobaltprophyrin membranes

Hiroyuki Nishide, Koichi Suenaga, Kazuya Murata, Hiroyoshi Kawakami, Eishun Tsuchida

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Poly(alkylmethacrylate-co-vinylimidazole) membranes, containing a cobaltporphyrin complex (CoP) which binds specifically and reversibly with molecular oxygen, were prepared. The spectroscopically determined apparent oxygen-binding equilibrium constant was greater for the membrane composed of the methacrylate copolymer with a longer alkyl side chain, which showed lower glass transition temperature (Tg) and larger oxygen solubility coefficient. The apparent oxygen-binding and-dissociation rate constants also increased with decreasing Tg of the membrane. The permeability coefficient and the time lag (low-pressure permeation measurement) increased with decreasing upstream gas pressure. This behavior was analyzed by a dual mode transport model. The oxygen permeability coefficient increased with the length of the alkyl side chain, because the longer chain increases oxygen diffusivity.

本文言語English
ページ(範囲)375-379
ページ数5
ジャーナルKobunshi Ronbunshu
46
6
出版ステータスPublished - 1989 6

ASJC Scopus subject areas

  • 化学工学(その他)
  • 環境科学(全般)
  • 材料科学(その他)
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック

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