通过熔融纺丝和可控结构重组制备的三维卷曲可生物降解聚乳酸纤维。
Three-dimensional crimped biodegradable poly(lactic acid) fibers prepared melt spinning and controlled structural reorganization.
作者信息
Yang Bo, Wang Rui, Dong Zhenfeng, Wu Jing, Kuang Minxuan, Jin Gaoling, Ma Huiling, Wang Yang, Zhang Qingying, Zhang Xiuqin
机构信息
Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science & Engineering, Beijing Institute of Fashion Technology Beijing 100029 China
出版信息
RSC Adv. 2020 Nov 25;10(70):42890-42896. doi: 10.1039/d0ra08681a. eCollection 2020 Nov 23.
Biodegradable three-dimensional crimped fibers were prepared by the side-by-side composite spinning of poly(lactic acid) (PLA) and low-melting point PLA (LM-PLA). The structural variation of the PLA/LM-PLA composite fibers during dry and wet heat treatment was explored systematically. It is shown that crystallization and disorientation were two key factors for the formation of the three-dimensional crimped structure of PLA/LM-PLA side-by-side composite fibers (SSCF). The wet heat-treated fiber has better crimp performance and fluffiness, and the crimp number, crimp ratio and crimp elasticity ratio of the treated PLA/LM-PLA SSCF with good comprehensive properties are 21 per 25 mm, 31.9% and 81.6%, which are similar to those of industrialized PET/PTT three-dimensional crimped fibers. The results of this study shed light on the development of novel three-dimensional crimped fibers with biodegradability.
通过聚乳酸（PLA）与低熔点聚乳酸（LM-PLA）的并列复合纺丝制备了可生物降解的三维卷曲纤维。系统地研究了PLA/LM-PLA复合纤维在干热处理和湿热处理过程中的结构变化。结果表明，结晶和取向解耦是形成PLA/LM-PLA并列复合纤维（SSCF）三维卷曲结构的两个关键因素。湿热处理后的纤维具有更好的卷曲性能和蓬松性，综合性能良好的经处理PLA/LM-PLA SSCF的卷曲数、卷曲率和卷曲弹性率分别为每25mm 21个、31.9%和81.6%，与工业化生产的PET/PTT三维卷曲纤维相近。本研究结果为新型可生物降解三维卷曲纤维的开发提供了思路。
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