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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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
Issue number6
Publication statusPublished - 1989 Jun

ASJC Scopus subject areas

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


Dive into the research topics of 'Facilitated oxygen transport in poly(alkylmethacrylate-co-vinylimidazole)-cobaltprophyrin membranes'. Together they form a unique fingerprint.

Cite this