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Biodegradable materials
Published in S. Thirumalai Kumaran, Tae Jo Ko, S. Suresh Kumar, Temel Varol, Materials for Lightweight Constructions, 2023
Akesh B. Kakarla, Satya G. Nukala, Ing Kong
Creating NFRPCs consist of two phases: the reinforcement phase and the matrix phase. Using natural fibers in the reinforcing phase improves their physical and mechanical properties and produces biodegradable and lightweight biocomposites [13, 15]. Natural fibers come from plants, animals, or minerals. Plant fibers consist of main chemical elements such as cellulose, hemicellulose, pectin, wax, and lignin [16]. The best-known natural fiber examples are stem-based fiber (flax, hemp, jute, etc.), leaf-based fibers (sisal, abaca, etc.), seed fiber (cotton, kapok), fruit (coir, palm, pineapple, etc.), grass and reed fiber (wheat, corn, and rice), and other types derived from wood and roots. An example of a structural overview of natural fiber (flax fiber) is shown in Figure 8.1.
Electrospinning of Biofibers and their Applications
Published in K.M. Praveen, Rony Thomas Murickan, Jobin Joy, Hanna J. Maria, Jozef T. Haponiuk, Sabu Thomas, Electrospun Nanofibers from Bioresources for High-Performance Applications, 2023
Natural cellulose fibers have been used for textiles and ropes for thousands of years. The natural fibers are cotton, jute, and flax, and protein fibers like wool and silk, and the like. It is because of the increase in world population that synthetic fibers came into existence. It is also clear that natural resources and agriculture are comparatively less in quantity and can’t meet the increasing need for the fibers. There is strong competition with major traditional fibers in terms of land dependency, cost, and the availability against the synthetic fibers. Jute, flax, hemp, sisal, kenaf, ramie, and so on, are common biofibers applied in industry. Abaca, palm oil, sugarcane bagasse, bamboo, pineapple leaf, coir, date palm leaf, curaua, rice straw, wheat straw and cornhusk fibers are also widely used due to their low cost, wide availability and specific properties [41].
Applications of Natural Fibers–Reinforced Composites (I)
Published in Shishir Sinha, G. L. Devnani, Natural Fiber Composites, 2022
Natural fibers are used to manufacture interior components of a vehicle, such as door panels, seatback inside layer, and package drops (the area at the rear of the seats of cars), etc. Coir fiber is utilized in the development of different parts of automobiles, such as seat bases, back cushions of seats, and head belts. Abaca fiber is utilized in underfoot body panels. About 5–10 kg of plant fibers are used per vehicle in automotive industries.
Tensile strength and elongation of selected Kenaf fibres of Ghana
Published in Cogent Engineering, 2023
George Ansong, Yesuenyeagbe A.K. Fiagbe, Antonia Y. Tetteh, Francis Davis
Glass fibres used as structural reinforcement in polymer composites have gained notable attention in the recent years (Rozyanty et al., 2021). However, the use of these materials poses diverse disadvantages which include non-renewability, high manufacturing energy consumption, non-recyclability, and non-biodegradability which can result in health complications when ingested (Cheung et al., 2009; Rozyanty et al., 2021). Natural fibres are increasingly being used in textile and polymer composites, specifically in the construction (building), automotive, packaging and furniture industries (Hasan et al., 2020). According to Negawo et al. (2019), natural fibres are used because of their advantages of being affordable, environmentally friendly, renewable, biodegradable, lower carbon footprint, better waste management and their reasonable mechanical robustness.
Alkali treatment of bamboo fibers improves the mechanical properties of metakaolin geopolymer
Published in Journal of Dispersion Science and Technology, 2023
Cen Guo, Ming Li, Shuai Wang, Shunping Zhang, Yanming Li, Chengxin Li
Natural fibers are environmentally friendly, biodegradable, low-cost, low-density, and renewable.[12,13] For example, sisal, cotton stalk, and banana hemp fibers are widely used as toughening agents in geopolymers.[14–16] Previously, Wongsa et al.[14] used sisal and coconut fibers as reinforcing materials to improve the tensile and flexural strengths of the fly ash geopolymer. Zhou et al.[15] soaked cotton stalk fiber in 10% NaOH solution for 48 hours and used it as a toughening material for fly ash geopolymer, increasing the 28 days bending strength of the geopolymer by 11.5%. Malenab et al.[16] treated canna hemp fiber with 6% NaOH to effectively improve the bending strength of the fly ash geopolymer.
Micromechanical models for predicting the mechanical properties of 3D-printed wood/PLA composite materials: A comparison with experimental data
Published in Mechanics of Advanced Materials and Structures, 2022
Ismail Ezzaraa, Nadir Ayrilmis, Manja Kitek Kuzman, Soufiane Belhouideg, Jamaa Bengourram
Aiming for a better performance of the FDM parts, the thermoplastic materials have been reinforced with synthetic fibers. Nowadays, natural fibers (hemp, wood, jute, flax …) are used to replace synthetic fibers as reinforcement of thermoplastic-based composites because of environmental issues. Furthermore, the growing concern in using natural fibers is mainly due to their availability from renewable natural resources, high specific strength and modulus, lightweight, low cost and biodegradability. Therefore, several sectors are interested in these materials, like automotive where car manufacturers are using natural fiber-reinforced composites in a wide range of their products, such as door panels, seat backs, dashboards, and interior parts. Besides the automotive industry, the applications of natural fiber-reinforced composites have also been found in construction industry, sports, and others, for example, laptop/mobile cases, and bicycle frames. However, despite the various advantages of natural fiber-reinforced composites, the major obstacle to their use is the lack of knowledge of their mechanical properties and, specifically, the elastic properties. Indeed, the prediction of these properties and the study of the parameters that may affect them is a more challenging approach for the FDM process. Several aspects need to be considered for the development of fiber composites, including fiber/matrix weight percentage, fiber geometry, fiber length, and fiber type.