GRAFT CAPSULE RESPONDING TO PH

摘要

PURPOSE:To obtain nylon capsule capable of changing the permeability of film reversibly in accordance with delicate change of pH by graft-polymerizing a monomer having a dissociation group or a monomer having oxidation-reduction function to a nylon capsule film. CONSTITUTION:A nylon capsule shrouded with a nylon film is manufactured wherein a monomer having a dissociation group and/or oxidation-reduction function is graft-polymerized to a nylon capsule film based on nylon. The nylon capsule is manufactured with an ordinary method by allowing diamine to react with dibasic acid, polymerizing or polycondensing amino acid or lactam. When the nylon capsule is dialyzed in various kinds of solns. wherein the pH of aq. soln. of substance to be incorporated therein has been regulated, the aimed substance can be freely incorporated in a hollow part of the capsule and trapped.