Voltage control of molecular diffusion through novel liquid crystalline membranes

Author

Roberts, Stuart ; Ryder, Dennis M. ; Olliff, Cedric J. ; Lloyd, Andrew W.

Author_Institution

Dept. of Electr. Eng., Brighton Univ., UK

fYear

1994

fDate

7-9 Sep 1994

Firstpage

973

Lastpage

978

Abstract

A preliminary investigation into the behaviour of a novel polymer membrane containing an embedded liquid crystal under the influence of very low (1 V/mm) DC and AC 100 Hz electric field stresses has been carried out. The rate of diffusion of methylene blue in an aqueous solution with applied electrical stress is reported. The results suggest that the rate of diffusion of methylene blue through the membrane can be controlled by the polarity of an applied DC voltage and by the application of a sinusoidal AC field

Keywords

biomedical equipment; diffusion; electromigration; filtration; flow through porous media; mechanical variables control; membranes; patient treatment; permeability; polymer dispersed liquid crystals; polymer films; 100 Hz; AC electric field stress; applied DC voltage; applied electrical stress; diffusion rate; embedded liquid crystal; liquid crystalline membranes; low voltage DC electric field stress; methylene blue; molecular diffusion; polarity; polymer membrane; pores; sinusoidal AC field; voltage control; Biomembranes; Crystallization; Drugs; Liquid crystal polymers; Liquid crystals; Permeability; Pulse modulation; Scanning electron microscopy; Stress; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1994. (ISE 8), 8th International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-1940-0

Type

conf

DOI

10.1109/ISE.1994.515257

Filename

515257