A novel pH-sensitive membrane from chitosan--TEOS IPN; preparation and its drug permeation characteristics.

Abstract

A novel organic-inorganic composite membrane was prepared, using tetra ethyl ortho silicate (TEOS) as an inorganic material and chitosan as an organic compound. Equilibrium and oscillatory swelling studies were conducted to investigate swelling behaviors of the membrane according to the pH of the swelling medium. Drug permeation experiments were also… (More)

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