Controllable porous structure polylactide self-reinforced composites with a large processing temperature window

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2024-11-22 DOI:10.1016/j.compositesb.2024.111996

Renzhi Li, Yangyang Feng, Song Zhang, Constantinos Soutis, R. Hugh Gong

引用次数: 0

Abstract

Polylactic acid (PLA) self-reinforced composites (SRCs) are potential alternatives to non-biodegradable plastic composites, but its narrow processing temperature window makes it difficult to manufacture. In this paper, PLA-SRCs with a processing temperature window of more than 50 °C were prepared by stereocomplexation of PLA. In addition, a novel and easy-to-handle solvent-induced interfacial modification of the fibres was developed in order to enhance the mechanical properties of PLA-SRCs. The method controllably generates a porous structure on the fibre surface, which greatly strengthens the interfacial bonding of the composites. After interfacial modification, the interfacial shear strength of PLA-SRCs was increased by almost 40 % while its tensile strength improved by more than 30 %, making this eco-friendly polymer system attractive to many modern industrial applications.

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具有大加工温度窗口的可控多孔结构聚乳酸自增强复合材料

聚乳酸（PLA）自增强复合材料（SRC）是非生物降解塑料复合材料的潜在替代品，但其狭窄的加工温度窗口使其难以制造。本文通过对聚乳酸进行立体共混，制备了加工温度窗口超过 50 ℃ 的聚乳酸自增强复合材料。此外，为了提高聚乳酸-SRC 的机械性能，还开发了一种新颖且易于处理的溶剂诱导纤维界面改性方法。该方法可控地在纤维表面生成多孔结构，从而大大加强了复合材料的界面粘合力。经过界面改性后，聚乳酸-SRC 的界面剪切强度提高了近 40%，拉伸强度提高了 30%以上，使这种环保型聚合物系统在许多现代工业应用中具有吸引力。

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

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.