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Durability of Plant Fiber Composites for Structural Application: A Brief Review

期刊

MATERIALS
卷 16, 期 11, 页码 -

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MDPI
DOI: 10.3390/ma16113962

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natural fibers; environment-friendly composites; moisture aging; lightweight design; fatigue

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Environmental sustainability and eco-efficiency are crucial for the future of materials, and the use of sustainable plant fiber composites (PFCs) in structural components has gained significant interest. The durability of PFCs, especially regarding moisture aging, creep properties, and fatigue properties, is of utmost importance. This article provides an overview of current research on PFCs' durability and discusses improvement methods, emphasizing the need for further research.
Environmental sustainability and eco-efficiency stand as imperative benchmarks for the upcoming era of materials. The use of sustainable plant fiber composites (PFCs) in structural components has garnered significant interest within industrial community. The durability of PFCs is an important consideration and needs to be well understood before their widespread application. Moisture/water aging, creep properties, and fatigue properties are the most critical aspects of the durability of PFCs. Currently, proposed approaches, such as fiber surface treatments, can alleviate the impact of water uptake on the mechanical properties of PFCs, but complete elimination seems impossible, thus limiting the application of PFCs in moist environments. Creep in PFCs has not received as much attention as water/moisture aging. Existing research has already found the significant creep deformation of PFCs due to the unique microstructure of plant fibers, and fortunately, strengthening fiber-matrix bonding has been reported to effectively improve creep resistance, although data remain limited. Regarding fatigue research in PFCs, most research focuses on tension-tension fatigue properties, but more attention is required on compression-related fatigue properties. PFCs have demonstrated a high endurance of one million cycles under a tension-tension fatigue load at 40% of their ultimate tensile strength (UTS), regardless of plant fiber type and textile architecture. These findings bolster confidence in the use of PFCs for structural applications, provided special measures are taken to alleviate creep and water absorption. This article outlines the current state of the research on the durability of PFCs in terms of the three critical factors mentioned above, and also discusses the associated improvement methods, with the hope that it can provide readers with a comprehensive overview of PFCs' durability and highlight areas worthy of further research.

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