The study of correlations among the process condition, structure and property for poly(l-lactide) fibers

IF 2.2 4区工程技术 Q1 MATERIALS SCIENCE, TEXTILES

Journal of Engineered Fibers and Fabrics Pub Date : 2023-01-01 DOI:10.1177/15589250221148850

Huixian Zhang, H. Bai, Nan Wang, Q. Zhang, Qiang Fu

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Abstract

This article focus on derive the process-structure-property relationship of Poly(l-lactide) (PLLA) fibers prepared by two-step melt spinning process. The spinning temperature, spinning rate, drawing temperature as well as draw ratio were studied to analyze the influence of process variables on the structure and properties of PLLA fibers. It suggests that the crystallinity, lamellar orientation structure and mechanical properties of fibers are dependent on the spinning conditions, including melt-spinning and hot-drawing process. An approximate linear correlation resulted between the orientation degree and tensile strength of PLLA fibers, which means that the oriented structure plays a dominant role to enhance PLLA fibers. PLLA fibers with high performance of 499 MPa and 5.30 GPa in tensile strength and Young’s modulus separately have been realized by the selected spinning parameters. The results provide a theoretical direction for enhancing PLLA fibers by adjusting the structure characteristic via modifying the spinning parameters.

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聚l-丙交酯纤维的工艺条件、结构与性能的相关性研究

本文着重推导了两步熔融纺丝法制备聚l-丙交酯(PLLA)纤维的工艺-结构-性能关系。研究了纺丝温度、纺丝速率、拉伸温度和拉伸比等工艺参数对PLLA纤维结构和性能的影响。结果表明，纤维的结晶度、层状取向结构和力学性能与纺丝条件有关，包括熔融纺丝和热拉伸工艺。取向度与pla纤维的拉伸强度呈近似线性相关，表明取向结构对pla纤维的增强起主导作用。通过选取纺丝工艺参数，实现了拉伸强度为499 MPa、杨氏模量为5.30 GPa的高性能PLLA纤维。研究结果为通过调整纺丝参数来提高聚乳酸纤维的结构特性提供了理论指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Engineered Fibers and Fabrics 工程技术-材料科学：纺织

CiteScore

5.00

自引率

6.90%

发文量

审稿时长

4 months

期刊介绍： Journal of Engineered Fibers and Fabrics is a peer-reviewed, open access journal which aims to facilitate the rapid and wide dissemination of research in the engineering of textiles, clothing and fiber based structures.