![]() Citation2013), since the Young’s modulus is actually not dependent from gage length. The variability in Young’s modulus is probably related to the variability in microstructure of the fiber and possible damage during the extraction process, as previously reported by (Alves Fidelis et al. This is related to the likelihood of finding more flaws in longer fiber, where the strength characteristic of natural fibers decreases as the gauge length increases. These data indicate that the fiber strength is sensitive to the gauge length, which means a decrease in fracture strength with increasing gauge length was observed (Kestur et al. ![]() In first place, it can be established that the tensile strength and modulus of elasticity of the UF and TF reported in this work are superior to the fibers of sisal, bamboo, palm leaft, jute, agave americana, tequila bagasse, and mezcal. Table 1 shows the mechanical properties of different natural fibers as a function of fiber length. Also, morphology and the chemical composition of UF and TF were evaluated. Hence, the aim of this study was to investigate the effect of AT on physical, thermal, and mechanical properties of A. It is well known that chemical treatments of agave fibers improves their thermal and mechanical properties, with benefits on the stiffness, strength, and dynamic moduli of the composites reinforced with them because it relates to the increased interfacial bond strength and adhesion between the matrix and the fibers (Rasana et al. angustifolia Haw fibers mechanically extracted from the leaves are thermally stable, their tensile strength is acceptable, the strain at failure decreases with the increase of the gauge length but the opposite situation was observed with the Young’s modulus. In this context, García-Méndez, Cortés-Martínez, and Almendárez-Camarillo ( Citation2020) report that A. ![]() Citation2013).Ī.angustifolia Haw is a native plant from Oaxaca, Mexico, used as raw material to elaborate on a distilled alcoholic beverage named “mezcal,” 2,500 agave plants/ha were cultivated in the last decade and 3,400 ha have been harvested annually (Cortés-Martínez and García-Méndez Citation2017 García-Méndez, Cortés-Martínez, and Almendárez-Camarillo Citation2020). ( Citation2020) mentioned that there are different treatments to modify natural fibers and AT is widely used to clean and modify the natural fiber surface when it is necessary to enhance the interface bonding between the fiber and the polymeric matrix (Elkhaoulani et al. ![]() On the other hand, the main disadvantages are their low temperature processing due to the possibility of fiber degradation, a tendency to form bundles, and, mainly, their hydrophilic nature that can lead to problems of adhesion with the chosen polymer matrix. The main advantages of the use of natural fibers in the development of composite materials include: passive safety, the fact that cellulose fibers offer a relatively high Young’s modulus and high strength, low density, and minimum abrasion of the processing equipment, minimum health risks during handling, biodegradability, their low cost as a raw material, a good surface finish of molded parts and their potential as a reusable material (Panaitescu et al. Recently, the demand for renewable materials like natural fibers as alternative reinforcement in polymer matrix composites has increased extensively (Madhu et al. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |