CONTROLLING POLYMER PROPERTY USING UV

摘要

PURPOSE: A controlling method of a biodegradable polymer is provided to control the degree of cross-linking of a polymer, thereby offering a polymer capable of changing physical properties, and to control polymer through simple facility. CONSTITUTION: A controlling method of a biodegradable polymer comprises: a mixing raw material step of mixing a biodegradable polymer, a polyfunctional monomer, and a photoinitiator; a step of cross-linking through UV by extruding the mixture; and a step of cooling the crosslinked material. The weight ratio of the biodegradable polymer and the polyfunctional monomer is 99-95 weight% : 1-5 weight%. The photoinitiator is one or more selected from a group consisting of carbonate, benzotriazoles system, benzophenone system, substituted or non-substituted benzoic acid ester, acrylate and steric hindrance amine.