RESIN COMPOSITION CONTAINING RECYLE POLYLACTIC ACID AND METHOD OF MANUFACTURING BIODEGRADABLE FIBER USED AS REINFORCEMENT MATERIAL IN CIVIL ENGINNERING THEREBY

摘要

PURPOSE: A resin composition is provided to reduce a manufacturing cost using cheap recycled polylactic acid as a main raw material, to reduce stiffness of biodegradable fiber, and to effectively prevent the decrease in biodegradation property and melting index. CONSTITUTION: A resin composition comprises 90 wt% of recycled polylactic acid, 7 to 9 wt% of polybutylene succinate, and 1 to 3 wt% of polybutylene adipate terephthalate. A manufacturing method of biodegradable fiber for geotextile grouting comprises the steps of: melting the resin composition, spinning, drawing, drying, and heat-treating the melted resin composition through a spinneret(2), passing the yarn spinned through the spinneret before the drawing through a tub(B), and/or passing the yarn spinned through the spinneret through the tub containing a solution while drawing.