Specific Permeation and Adsorption of Aqueous Amino Acids by PlasmaPolymerized Membranes of d-Camphor and l-Menthol

Abstract

Polymeric d-camphor and l-menthol membranes were prepared by plasma polymerization, and permeation and adsorption characteristics of amino acids by these membranes were investigated.
It was found that plasma-polymerized d-camphor and l-menthol membranes possessed fairly the structure of their starting compounds and that the permeabilities for aqueous D-tryptophan and D-proline were different from those of L-amino acids.
It was also found that silica particles, the surface of which was covered with plasmapolymerized d-camphor membranes, adsorbed L-tryptophan preferably to D-tryptophan.