Biodegradable polylactic acid/cotton composite fabrics with superior asymmetric liquid slipping and self-cleaning performance for personal protective equipment

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-04-11 DOI:10.1016/j.coco.2025.102400

Ke Zhao , Heng Zhang , Qi Zhen , Peng Lu , Ziqiang Yang

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Abstract

Personal protective equipment (PPE) plays a crucial role in interrupting the transmission of contaminants, providing essential protection for the human body against harmful substances. However, traditional PPE exhibits non-biodegradability, strong adhesion to liquids, and inadequate mechanical properties. To address these issues, a polylactic acid/cotton (PLA/CT) composite fabric with linearly embedded structure was fabricated via a melt-blown hydroentanglement composite process. This linearly embedded structure, with an adjustable linearly air groove, significantly enhances the asymmetric liquid slipping performance and mechanical performance of the PLA/CT composite fabrics. The liquid slipping angles in machine direction reached 12°, which was 25° lower than in cross direction, and water contact angle remained above 140°. The tensile strength increased from 325.9 N to 391.5 N, approximately 10.1 times higher than conventional melt-blown fabrics. Moreover, PLA/CT composite fabrics exhibit excellent breathable performance and water vapor permeability stabilized at 4802.6 g/(m²·24h). These findings indicate that the linearly embedded PLA/CT composite fabrics with asymmetric liquid slipping performance and superior mechanical strength have significant application potential in high-performance PPE.

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可生物降解的聚乳酸/棉复合织物，具有优异的不对称滑液和自清洁性能，用于个人防护装备

个人防护装备（PPE）在阻断污染物传播方面发挥着至关重要的作用，为人体免受有害物质的侵害提供了必要的保护。然而，传统的PPE具有不可生物降解性，对液体的附着力强，机械性能不足。为了解决这些问题，采用熔喷氢缠结复合工艺制备了线性嵌入结构的聚乳酸/棉花（PLA/CT）复合织物。这种线性嵌入结构，加上可调节的线性气槽，显著提高了PLA/CT复合织物的不对称液体滑移性能和力学性能。液体在机器方向的滑动角达到12°，比交叉方向小25°，水接触角保持在140°以上。抗拉强度由325.9 N提高到391.5 N，约为传统熔喷织物的10.1倍。PLA/CT复合织物具有优异的透气性，透气性稳定在4802.6 g/（m2·24h）。研究结果表明，具有不对称液滑性能和优异机械强度的线性嵌套PLA/CT复合织物在高性能PPE领域具有重要的应用潜力。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.