POLYLACTIC ACID FIBER STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a fiber structure produced by post-processing and reversibly color changing with a sufficient color density by an irradiation with light. SOLUTION: This invention relates to the polylactic acid fiber structure using the polylactic acid fibers at least a part of the fiber structure which exhibit an excellent optical transmittance in visible light region and a remarkably reduced amount of energy absorption in ultra violet region as compared to common fibers, wherein the fiber structure exhibits a sufficient and homogeneous reversible color changing property and a high color density by manifesting a sufficient and homogeneous reversible color changing property caused by the effect of lights penetrating inside of fibers in a region not directly irradiated with the light by fixing optically reversible color changing fine particles on the surface of the fiber or between fibers. COPYRIGHT: (C)2006,JPO&NCIPI