Hydrothermal aging and soil biodegradation characteristics of biopolymer based sustainable composites

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Reinforced Plastics and Composites Pub Date : 2024-07-24 DOI:10.1177/07316844241265276

Karri Santhosh Kumar, Deepak Kaushik, Inderdeep Singh

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引用次数: 0

Abstract

The current research endeavor examines the water absorption (in-service life) and soil biodegradation (end-of-the-service life) behavior of short sisal fiber (SF) reinforced poly (lactic acid) (PLA) and bio-based poly (butylene succinate) (bio PBS) composites. Samples were fabricated by extrusion-injection molding with varying sisal fiber loading of 10, 20, and 30 wt%. The water absorption test was conducted in distilled water at three distinct temperatures (5, 25, and 45 °C) for 336 h. The sorption behavior of composites was studied experimentally, and detailed diffusion kinetic behavior is discussed using Fickian diffusion models. The impact of fiber content and hydrothermal temperature on water diffusion and maximum water absorption was investigated in detail. A soil burial test was conducted in local farmland soil for 60 days to determine the influence of fiber content on the biodegradation characteristics of composites. After exposure to hydrothermal aging, it was concluded that fiber loading was most significant in affecting the maximum percentage of water absorption, whereas hydrothermal temperature was more relevant for higher water diffusion. Soil burial tests showed that SF/bioPBS composites degraded quickly as compared to PLA composites. Overall, composites made with bio PBS have shown an expected response than PLA composites in terms of water absorption and soil biodegradation.

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基于生物聚合物的可持续复合材料的水热老化和土壤生物降解特性

目前的研究工作是考察短剑麻纤维（SF）增强聚乳酸（PLA）和生物基聚丁二酸丁二醇酯（bio PBS）复合材料的吸水性（使用中寿命）和土壤生物降解（使用后寿命）性能。样品通过挤出注塑成型制成，剑麻纤维含量分别为 10、20 和 30 wt%。实验研究了复合材料的吸水行为，并使用菲克扩散模型讨论了详细的扩散动力学行为。详细研究了纤维含量和水热温度对水扩散和最大吸水率的影响。为了确定纤维含量对复合材料生物降解特性的影响，在当地农田土壤中进行了为期 60 天的土壤掩埋试验。经过水热老化后，得出的结论是纤维含量对最大吸水率的影响最大，而水热温度对更高的水扩散率的影响更大。土壤埋藏试验表明，与聚乳酸复合材料相比，SF/生物聚苯乙烯复合材料降解得更快。总体而言，在吸水性和土壤生物降解方面，使用生物 PBS 制成的复合材料比聚乳酸复合材料表现出预期的效果。

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

Journal of Reinforced Plastics and Composites 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.50%

发文量

审稿时长

1.3 months

期刊介绍： The Journal of Reinforced Plastics and Composites is a fully peer-reviewed international journal that publishes original research and review articles on a broad range of today''s reinforced plastics and composites including areas in: Constituent materials: matrix materials, reinforcements and coatings. Properties and performance: The results of testing, predictive models, and in-service evaluation of a wide range of materials are published, providing the reader with extensive properties data for reference. Analysis and design: Frequency reports on these subjects inform the reader of analytical techniques, design processes and the many design options available in materials composition. Processing and fabrication: There is increased interest among materials engineers in cost-effective processing. Applications: Reports on new materials R&D are often related to the service requirements of specific application areas, such as automotive, marine, construction and aviation. Reports on special topics are regularly included such as recycling, environmental effects, novel materials, computer-aided design, predictive modelling, and "smart" composite materials. "The articles in the Journal of Reinforced Plastics and Products are must reading for engineers in industry and for researchers working on leading edge problems" Professor Emeritus Stephen W Tsai National Sun Yat-sen University, Taiwan This journal is a member of the Committee on Publication Ethics (COPE).