Free Radical Scavenging Polylactic Acid Fibers: A Study of Melt Spinning Preparation, Characterization, and Properties

IF 4.7 3区工程技术 Q2 ENGINEERING, ENVIRONMENTAL

Journal of Polymers and the Environment Pub Date : 2024-12-14 DOI:10.1007/s10924-024-03472-6

Chenghui Zheng, Huanling Wu, Qingqing Zhou, Lingfang Wang, Jingchun Lv, Haiyan Mao

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Abstract

Polylactic acid (PLA) fibers have great potentials in textile fields with eco-friendship and low carbon emission. However, the poor ductility, inferior free radical scavenging effect, and moderate biodegradability make them challenging in qualified fibers. In this context, a series of PLA fibers with excellent free radical scavenging effect were prepared by melt spinning with PLA /poly (ethylene oxide) (PEO) /curcumin (CUR). The tenacity and free radical scavenging effect of the fiber with 12.0 wt% PEO and 1.0 wt. % CUR were 3.14 CN dtex^-1, 96.2% respectively, compared with 2.24 CN dtex^-1, 2.9% for pure PLA fibers, respectively. X-ray diffraction analysis showed that CUR behaved as nucleating agents and accelerated the crystallization with elevated crystallinity. The synergistic action of PEO and CUR was found to have significant effects on the mechanical, thermal, crystalline, and free radical scavenging properties for the composite fibers. X-photoelectron spectroscopy analysis, morphological investigation, and disintegrability tests in soil demonstrated the homogenous, ductile, and outstanding biodegradable behaviors of the as-prepared fibers.

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清除自由基的聚乳酸纤维：熔融纺丝制备、表征及性能研究

聚乳酸（PLA）纤维具有生态友好、低碳排放等特点，在纺织领域具有很大的发展潜力。然而，其延展性差，清除自由基的能力较差，生物降解性一般，使其成为合格纤维的挑战。在此背景下，采用聚乳酸/聚环氧乙烷(PEO) /姜黄素（CUR）熔融纺丝法制备了一系列具有良好自由基清除效果的聚乳酸纤维。含12.0 wt% PEO和1.0 wt. % CUR的纤维的韧性和自由基清除能力分别为3.14 CN dtex-1和96.2%，而纯PLA纤维的韧性和自由基清除能力分别为2.24 CN dtex-1和2.9%。x射线衍射分析表明，CUR作为成核剂，加速了结晶，提高了结晶度。PEO和CUR的协同作用对复合纤维的力学、热、结晶和自由基清除性能有显著影响。x光电子能谱分析、形态调查和土壤可降解性测试表明，制备的纤维具有均匀性、延展性和出色的可生物降解性。

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来源期刊

Journal of Polymers and the Environment 工程技术-高分子科学

CiteScore

9.50

自引率

7.50%

发文量

297

审稿时长

9 months

期刊介绍： The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.