Lipid Layer-Immobilized Membranes Prepared by Ultrafiltration and Their Gas Permeation Properties

✍ Scribed by Teruhiko Baba; Masaji Matsuda; Chiyoshi Kamizawa

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 159 KB
• Volume: 163
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1994.1102

✦ Synopsis

An easy and repeatable method for preparing lipid layer-immobilized membranes using liposomes and ultrafiltration (UF) membranes was proposed. The performance of the prepared membrane was examined through gas permeation experiments. The membrane was stable and functional up to at least a 0.3 MPa pressure differential across the membrane. The gas permeation rate and gas separation factor varied concomitantly with the amount and composition of the lipids immobilized on the UF membrane. In the case of the membrane composed only of egg yolk phosphatidylcholine ( (\mathrm{PC}) ), the (\mathrm{O}{2}) permeability coefficient was around (10^{-15} \mathrm{~m}^{3}(\mathrm{STP}) \mathrm{m} / \mathrm{m}^{2} \mathrm{~s} \mathrm{~Pa}) and the (\mathrm{O}{2} / \mathrm{N}{2}) separation factor was around 2 . The presence of cholesterol in the (\mathrm{PC}) layers improved the (\mathrm{O}{2} / \mathrm{N}{2}) separation factor at a specific (\mathrm{O}{2}) permeation rate. (1994 Academic Press, Inc.