碱处理生物质纤维和木犀草废增强聚乳酸杂化生物复合材料的结构和热性能

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-04-17 DOI:10.1016/j.csite.2025.106170

Isma Dembri , Ahmed Belaadi , Abdelaziz Lekrine , Messaouda Boumaaza , Mohammad Jawaid , Ahmad Safwan Ismail , Djamel Ghernaout

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引用次数: 0

摘要

本研究的目的是利用农业生物废弃物开发可降解复合材料，使其具有良好的应用前景。由于其运输和回收能力，它们是生产体育器材，绿色建筑材料和汽车内饰部件的杰出选择。在这项工作中，用碱处理的罗布斯塔（Rb）短生物质棕榈纤维和生物炭(B)增强聚乳酸（PLA）基体制备了杂化生物复合材料。扫描电镜显示，与未处理的增强材料相比，处理后的增强材料的界面空间减少，变得更少，更小。经3% NaOH处理的rb增强生物复合材料（PLA-BRb3）具有较好的粘弹性，具有较高的储能和损耗模量，最小的阻尼因子（tan δ），具有高弹性和较低的玻璃化转变温度。损耗模量和存储模量分别达到516 MPa和2463.64 MPa，具有良好的能量耗散和增强的阻尼能力，非常适合抗冲击和抗振动应用。Tan δ降至0.97，是研究中最具弹性的材料。通过进一步的研究和开发，这些绿色生物复合材料的质量可以得到改善，其用途可以扩展到各种可持续的生产部门。

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Structural and thermal properties of Alkali-treated biomass fibers and W. robusta waste reinforced PLA hybrid biocomposites

The aim of this study to develop biodegradable composites by using agricultural biowaste that well qualified to be used in various applications. They are an outstanding choice for the production of sports equipment, green building materials, and car interior components due to their transport and recycling capabilities. In this work, hybrid biocomposites are fabricated from a Poly lactic acid (PLA) matrix reinforced with alkali-treated Robusta (Rb) short biomass palm fibers and biochar (B) were characterized. Scanning electron microscopy showed a decrease in the interfacial spaces of the treated reinforcement materials compared to the untreated ones, becoming less frequent and smaller. The Rb-reinforced biocomposite treated with 3 % NaOH (PLA-BRb3) showed better viscoelastic behavior, with high energy storage and loss moduli and minimal damping factor (tan δ), showing high elasticity and low glass transition temperature. The loss and storage moduli reached 516 MPa and 2463.64 MPa, respectively, suggesting excellent energy dissipation and enhanced damping capacity, ideal for shock and vibration resistance applications. Tan δ decreased to 0.97, making it the most elastic material in the study. The qualities of these green biocomposites could be improved and their uses could be extended to various sustainable production sectors through further research and development.

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.