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 |
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ページ(範囲) | 375-379 |
ページ数 | 5 |
ジャーナル | Kobunshi Ronbunshu |
巻 | 46 |
号 | 6 |
出版ステータス | Published - 1989 6月 |
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