Facile and Large-scale Fabrication of Biodegradable Thermochromic Fibers Based on Poly(lactic acid)

作     者：Xiao-Xiong Chen Jin-Chao Yu Kang Chen Peng Ji Xiang-Ling Chen Zhi-Juan Pan Xiao-Xiong Chen;Jin-Chao Yu;Kang Chen;Peng Ji;Xiang-Ling Chen;Zhi-Juan Pan

作者机构：College of Textile and Clothing EngineeringSoochow UniversitySuzhou 215123China Engineering Research Center of Technical TextilesMinistry of EducationDonghua UniversityShanghai 201620China College of Materials and Textiles and National Engineering Laboratory for Textile Fiber Materials and Processing TechnologyZhejiang Sci-Tech UniversityHangzhou 310018China Co-Innovation Center for Textile IndustryDonghua UniversityShanghai 201620China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2022年第40卷第10期

页      面：1242-1251,I0010页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the Fundamental Research Funds for the Central Universities(No.21D110124/008) the Prospective Applied Basic Research Program of Suzhou City(No.SYG202041) Science and Technology Guidance Project of China Textile Industry Federation(No.2021003) 

主　　题：Poly(lactic acid)fiber Reversible thermochromic fiber Biodegradable Melt spinning 

摘      要：To investigate the feasibility of developing biobased and biodegradable thermochromic fibers,poly(lactic acid)(PLA)fibers with visual temperature indicator functionality were fabricated using a scalable melt spinning technique(spinning speed 800 m/min),where PLA and thermochromic microcapsules were used as fiber-forming polymers and color indicators,*** effect of thermochromic microcapsules on the mechanical properties and reversible color-changing function of PLA fibers was systematically investigated to achieve high tenacity and sensitive color-changing *** difference in the fiber performance was connected to changes in the multilayer *** results show that PLA fibers exhibit excellent tenacity of 3.7-4.7 cN/dtex and reversible and stable thermochromic behavior over 31℃.The high fraction of mesophase within TPLA-1 fiber plays an important role in its ***,the low-concentration of microcapsules(~1 wt%)with good dispersion could act as a nucleating agent inside the PLA matrix and contribute to the formation of microcrystals in the amorphous between primary lamellae,which is also beneficial to maintain the tenacity of the *** agglomeration of high-concentration microcapsules within PLA fibers hampered the formation of mesophase,resulting in a decrease in fiber *** from the content of microcapsules,the agglomeration of high-concentration microcapsules(5 wt%)is the main reason that limits the substantial increase in fiber color *** study opens up new possibilities for degradable thermochromic fibers produced using standard industrial spinning technology.