Ion Track Technology

PhysicsConsult

Reimar Spohr

PostHeaderIcon Abstract

Electric control of responsive membrane (in German). Spohr, Reimar; Yoshida, Masaru. German Patent Number DE 1998-19853286 19981119 (1998), European Patent EP 1148869 (1999)

A chemical valve membrane is fabricated by grafting a responsive gel on the pore walls of an etched ion track membrane. The invention suggests to control the membrane electrically. Most convenient is heating by an alternating current. Whenever the critical temperature of the hydrogel is reached, the gel collapses and the membrane permeability increases abruptly.