Effect of an applied electric field on liquid crystalline membranes: control of permeability
This paper considers the development of liquid crystalline variable permeability membranes. The electrically induced changes in permeability of a liquid crystalline membrane composed of a 23% w/v solution of poly(γ-benzyl-l-glutamate) (PBLG) in dichloromethane are described. PBLG exists in the chole...
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| Veröffentlicht in: | Journal of membrane science 1985-01, Vol.24 (1), p.83-96 |
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| container_title | Journal of membrane science |
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| creator | Bhaskar, R.K. Sparer, R.V. Himmelstein, K.J. |
| description | This paper considers the development of liquid crystalline variable permeability membranes. The electrically induced changes in permeability of a liquid crystalline membrane composed of a 23% w/v solution of poly(γ-benzyl-l-glutamate) (PBLG) in dichloromethane are described. PBLG exists in the cholesteric mesophase in solution in a suitable α-helicogenic solvent. When an electric field is applied to a thin membrane comprised of this material, a transition to the nematic mesophase is triggered, and the permeability of the membrane for small organic permeants increases. This increase takes the form of a 50-60% increase in the steady state flux through the membrane. |
| doi_str_mv | 10.1016/S0376-7388(00)83210-X |
| format | Article |
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The electrically induced changes in permeability of a liquid crystalline membrane composed of a 23% w/v solution of poly(γ-benzyl-l-glutamate) (PBLG) in dichloromethane are described. PBLG exists in the cholesteric mesophase in solution in a suitable α-helicogenic solvent. When an electric field is applied to a thin membrane comprised of this material, a transition to the nematic mesophase is triggered, and the permeability of the membrane for small organic permeants increases. 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The electrically induced changes in permeability of a liquid crystalline membrane composed of a 23% w/v solution of poly(γ-benzyl-l-glutamate) (PBLG) in dichloromethane are described. PBLG exists in the cholesteric mesophase in solution in a suitable α-helicogenic solvent. When an electric field is applied to a thin membrane comprised of this material, a transition to the nematic mesophase is triggered, and the permeability of the membrane for small organic permeants increases. 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| ispartof | Journal of membrane science, 1985-01, Vol.24 (1), p.83-96 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry Membranes Porous materials |
| title | Effect of an applied electric field on liquid crystalline membranes: control of permeability |
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