METHOD FOR CONTROLLING DEGRADATION RATE OF BIODEGRADABLE POLYMER

摘要

PROBLEM TO BE SOLVED: To provide a method for controlling a degradation rate of a biodegradable polymer such as polylactic acid by a simple method.SOLUTION: The method comprises modifying the surface of a biodegradable polymer by subjecting the surface to a UV-ozone treatment thereby to control the degradation rate of the biodegradable polymer. The surface of the biodegradable polymer is partially subjected to a UV-ozone treatment for example via a mask and then the whole surface is subjected to an enzymatic degradation treatment thereby partially controlling the degradation rate of the biodegradable polymer to form a pattern on the surface of the biodegradable polymer.