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Effect of carrier concentration on the facilitated oxygen transport in a polymer membrane
Author(s) -
Suzuki Takayuki,
Nishide Hiroyuki,
Itakura Keita,
Tsuchida Eishun
Publication year - 1994
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1994.220050502
Subject(s) - permeation , membrane , oxygen , facilitated diffusion , polymer , diffusion , oxygen transport , limiting oxygen concentration , materials science , fick's laws of diffusion , chemical engineering , chemistry , organic chemistry , thermodynamics , biochemistry , composite material , engineering , physics
Abstract Facilitated transport of oxygen in a solid Polymer membrane containing cobaltporphyrin (CoP) which carries oxygen specifically and reversibly, leads to permselectivity of oxygen against nitrogen in the membrane. The increase in concentration of the CoP carrier is expected to enhance the oxygen transport. The membranes of poly(octylmethacrylate‐co‐vinylimidazole) containing 0.8 ∼ 10 wt% CoP were prepared, and the effects of the CoP‐concentration on the transport and the diffusion constants of oxygen are studied. Although the induction period before the steady state of oxygen permeation was prolonged with the CoP concentration in the polymer membrane, the glass transition temperature (T g ) of the membrane was increased and the diffusion constants of oxygen were decreased with the CoP concentration to yield unexpected reduction of the oxygen permeation in the highly CoP loaded membrane.