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

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

Research output: Contribution to journalArticle

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Abstract

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.

Original languageEnglish
Pages (from-to)375-379
Number of pages5
JournalKobunshi Ronbunshu
Volume46
Issue number6
Publication statusPublished - 1989 Jun

Fingerprint

Oxygen
membrane
Membranes
oxygen
Hydraulic conductivity
Methacrylates
permeability
Molecular oxygen
Equilibrium constants
Permeation
Rate constants
Copolymers
diffusivity
Solubility
Gases
low pressure
solubility
glass
gas
temperature

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Environmental Science(all)
  • Materials Science (miscellaneous)
  • Ceramics and Composites
  • Polymers and Plastics

Cite this

Facilitated oxygen transport in poly(alkylmethacrylate-co-vinylimidazole)-cobaltprophyrin membranes. / Nishide, Hiroyuki; Suenaga, Koichi; Murata, Kazuya; Kawakami, Hiroyoshi; Tsuchida, Eishun.

In: Kobunshi Ronbunshu, Vol. 46, No. 6, 06.1989, p. 375-379.

Research output: Contribution to journalArticle

Nishide, H, Suenaga, K, Murata, K, Kawakami, H & Tsuchida, E 1989, 'Facilitated oxygen transport in poly(alkylmethacrylate-co-vinylimidazole)-cobaltprophyrin membranes', Kobunshi Ronbunshu, vol. 46, no. 6, pp. 375-379.
Nishide, Hiroyuki ; Suenaga, Koichi ; Murata, Kazuya ; Kawakami, Hiroyoshi ; Tsuchida, Eishun. / Facilitated oxygen transport in poly(alkylmethacrylate-co-vinylimidazole)-cobaltprophyrin membranes. In: Kobunshi Ronbunshu. 1989 ; Vol. 46, No. 6. pp. 375-379.
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