| 摘要 |
PURPOSE: A photo-sensitive-biodegradable composite resin is provided to reduce molecular weight by collision of a polymer backbone through sunlight and to have excellent biodegradability. CONSTITUTION: A photo-sensitive-biodegradable composite resin is manufactured by: a step of a manufacturing a metal stearate by filtering, washing and drying a precipitate which is obtained by dropping and reacting a stearic acid and a metal sulfate hydrate into a potassium hydrate solution; a step of melt-mixing the metal stearate and a decomposition-controlling compound into a polymer resin to form a photo-sensitive-biodegradable composite resin composition; and a step of manufacturing a photo-sensitive-biodegradable pellet by melting and extrusion molding the composition. [Reference numerals] (AA) Metal stearate manufacturing step; (BB) Photo-sensitive-biodegradable composite resin composition forming step; (CC) Pelletizing step |
