Fiber treatment impact on the thermal behavior of biomass/palm-fibers polylactic-acid hybrid biocomposites

IF 5.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Chemistry and Physics Pub Date : 2025-07-01 Epub Date: 2025-03-03 DOI:10.1016/j.matchemphys.2025.130651

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

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Abstract

The purpose of this investigation was to develop 100 % natural biocomposites from biopolymers such as polylactic acid (PLA) based on treated fibers and biochar (B) derived from the Washingtonia filifera (WF) plant. The dynamic mechanical characteristics, coefficient of thermal expansion, and thermal stability (TS) of biocomposites were studied using dynamic mechanical and thermomechanical analyses. Increasing the fiber treatment period caused the melting temperature of the biocomposites to decrease. The PLA-BWF72 composite demonstrated better TS compared to the others. Compared to untreated hybrid biocomposites, these composites exhibit enhanced TS and resistance following treatment with sodium bicarbonate. The dynamic mechanical analysis revealed that PLA-BWF72 hybrid biocomposites (2621.987 MPa) had a significantly higher storage modulus (SM) than the biocomposites produced. However, PLA-BWF24 hybrid biocomposites showed the lowest SM (2299.174 MPa), indicating a low level of stiffness. Cole-Cole plots of the hybrid biocomposites developed revealed the presence of imperfect semicircles, indicating their heterogeneity.

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纤维处理对生物质/棕榈纤维聚乳酸混杂生物复合材料热性能的影响

本研究的目的是开发100%天然的生物复合材料，这些生物聚合物如聚乳酸（PLA）是基于处理过的纤维和生物炭(B)，这些生物聚合物来源于华盛顿丝绒（WF）植物。采用动态力学和热力学分析方法研究了生物复合材料的动态力学特性、热膨胀系数和热稳定性。随着纤维处理时间的延长，生物复合材料的熔融温度降低。PLA-BWF72复合材料与其他材料相比表现出更好的TS。与未经处理的杂化生物复合材料相比，这些复合材料在碳酸氢钠处理后表现出增强的TS和抗性。动态力学分析表明，PLA-BWF72杂化生物复合材料（2621.987 MPa）的存储模量（SM）明显高于制备的生物复合材料。而PLA-BWF24混杂生物复合材料的SM最低（2299.174 MPa），表明其刚度水平较低。杂交生物复合材料的Cole-Cole图显示存在不完美的半圆，表明其异质性。

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.