CONTROL OF DEGRADABILITY OF POLYLACTIC ACID-BASED RESIN, DEGRADABLE FILM/SHEET AND FORMED MATERIAL FROM THE FILM/SHEET

摘要: PROBLEM TO BE SOLVED: To obtain the subject polymer capable of effectively forming an initial degradation thereof e.g. a crack and as result accelerating hydrolysis by water so to enhance degradability blending specific amount inorganic particles. SOLUTION: This method for controlling polylactic acid-based is blend (A) 100 pts.wt. (e.g.; having 50,000-100,000 weight averaged molecular containing >=94% lactic acid unit, with (B) 1-120 pt.wt. particles silica, titania, talc, alumina, clay, calcium carbonate, magnesium carbonate glass powder, large surface area) enhancing component A. Further, components A B can be performed simultaneously formation, but it more preferable melt extruding sufficiently dried separate extruders peletization before formation.