Novel polymer/liquid crystal composite membrane with unique permselective characteristics

Tisato Kajiyama; Hirotsugu Kikuchi; Seiji Shinkai

doi:10.1016/0376-7388(88)80021-8

Novel polymer/liquid crystal composite membrane with unique permselective characteristics

Tisato Kajiyama, Hirotsugu Kikuchi, Seiji Shinkai

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

A series of built-up thin films composed of polymer and liquid crystal (LC) was prepared by spreading a single drop of mixture solution on a water surface. The weight fraction of LC in the composite membrane was 60%. The thickness and the aggregation state of the water-cast membrane can be controlled by the kind of solvent and the concentration of the mixture solution. Liquid crystalline material forms a continuous phase in the three-dimensional spongy network of the polymer matrix. Therefore, the liquid crystalline phase can play the role of a low viscous diffusing phase for permeants such as gases or metal ions. The novel polymer/LC composite membranes can be applied to oxygen enrichment, molecular filtration, active transport of metal cations and complete thermocontrol of ion permeation.

Original language	English
Pages (from-to)	243-255
Number of pages	13
Journal	Journal of Membrane Science
Volume	36
Issue number	C
DOIs	https://doi.org/10.1016/0376-7388(88)80021-8
Publication status	Published - Jan 1 1988

All Science Journal Classification (ASJC) codes

Biochemistry
Materials Science(all)
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/0376-7388(88)80021-8

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AB - A series of built-up thin films composed of polymer and liquid crystal (LC) was prepared by spreading a single drop of mixture solution on a water surface. The weight fraction of LC in the composite membrane was 60%. The thickness and the aggregation state of the water-cast membrane can be controlled by the kind of solvent and the concentration of the mixture solution. Liquid crystalline material forms a continuous phase in the three-dimensional spongy network of the polymer matrix. Therefore, the liquid crystalline phase can play the role of a low viscous diffusing phase for permeants such as gases or metal ions. The novel polymer/LC composite membranes can be applied to oxygen enrichment, molecular filtration, active transport of metal cations and complete thermocontrol of ion permeation.

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