Abstract
AbstractThe effects of three cationic surfactants, dodecylammonium chloride (C12N+), dodecyldimethylammonium chloride (C12N+ 2C1), and dodecyltrimethylammonium chloride (C12N+ 3C1), on the permeability of 1‐phenyl‐1,2‐ethanediol were investigated for the membrane of poly[butyl methacrylate‐co‐N‐methyl‐N‐(4‐vinylphenethyl)ethylenediamine]‐graft‐poly(L‐glutamic acid) (PLGA) (1b), the permeating pathway being composed of the polypeptide domain. The membrane treated with a surfactant shows a decrease in permeability due to the coil‐to‐helix transition of PLGA induced by the surfactant. The effects of the three surfactants on the permeability was found to be of the order: C12N+ > C12N+2C1 > C12N+3C1.
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