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Recent Developments in Luffa Natural Fiber Composites: Review

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Department of Mechanical Engineering, Eastern Mediterranean University, Famagusta 99628, North Cyprus via Mersin 10, Turkey
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Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
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Faculty of Electrical—Electronic Engineering, Duy Tan University, Da Nang 550000, Vietnam
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Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
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Authors to whom correspondence should be addressed.
Sustainability 2020, 12(18), 7683; https://doi.org/10.3390/su12187683
Received: 11 August 2020 / Revised: 9 September 2020 / Accepted: 11 September 2020 / Published: 17 September 2020
Natural fiber composites (NFCs) are an evolving area in polymer sciences. Fibers extracted from natural sources hold a wide set of advantages such as negligible cost, significant mechanical characteristics, low density, high strength-to-weight ratio, environmental friendliness, recyclability, etc. Luffa cylindrica, also termed luffa gourd or luffa sponge, is a natural fiber that has a solid potential to replace synthetic fibers in composite materials in diverse applications like vibration isolation, sound absorption, packaging, etc. Recently, many researches have involved luffa fibers as a reinforcement in the development of NFC, aiming to investigate their performance in selected matrices as well as the behavior of the end NFC. This paper presents a review on recent developments in luffa natural fiber composites. Physical, morphological, mechanical, thermal, electrical, and acoustic properties of luffa NFCs are investigated, categorized, and compared, taking into consideration selected matrices as well as the size, volume fraction, and treatments of fibers. Although luffa natural fiber composites have revealed promising properties, the addition of these natural fibers increases water absorption. Moreover, chemical treatments with different agents such as sodium hydroxide (NaOH) and benzoyl can remarkably enhance the surface area of luffa fibers, remove undesirable impurities, and reduce water uptake, thereby improving their overall characteristics. Hybridization of luffa NFC with other natural or synthetic fibers, e.g., glass, carbon, ceramic, flax, jute, etc., can enhance the properties of the end composite material. However, luffa fibers have exhibited a profuse compatibility with epoxy matrix. View Full-Text
Keywords: luffa natural fiber composites; mechanical properties; physical properties; thermal properties; chemical properties; morphological properties luffa natural fiber composites; mechanical properties; physical properties; thermal properties; chemical properties; morphological properties
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Alhijazi, M.; Safaei, B.; Zeeshan, Q.; Asmael, M.; Eyvazian, A.; Qin, Z. Recent Developments in Luffa Natural Fiber Composites: Review. Sustainability 2020, 12, 7683.

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