Abstract:Because of their appealing properties, such as biodegradability, high basic stiffness, low density, and low cost, natural fibers have begun to be used in a variety of applications. In comparison to synthetics, they are also reusable. The aim of this work is to develop new woven materials made of wool and Alfa fibers (Stipa-tenacissima). The extraction of Alfa fibers was achieved via alkaline treatment. The chemical composition, mechanical and physical properties of the extracted fibers were determined. Wovens … Show more
“…Figure 2 shows a schematic of the woven manufacturing process and the prints of the manufactured woven are illustrated in Figure 3. The extraction of cellulose from the alfa plant was done with soda , we have already published an article on the method of extraction of cellulose from the alfa plant, 7 then the manual carding of the cellulose was done, then the spinning of the fibers to obtain continuous threads and finally the weaving of the taffetas type was done manually for 4 different types.Figure 1.Photographs of yarns.Figure 2.Woven preparation.Figure 3.Photographs of the manufactured woven.…”
Section: Methodsmentioning
confidence: 99%
“…6 In our case, we performed the treatment with NaOH. 7 The properties of fibers are linked to the concentration and duration of alkaline treatments. 8,9 Benyahia et al 10 study the effect of surface chemical changes on the composite properties of fiber polyester alfa mat, the scanning electron microscopy observations have shown that alkali-treatment enhanced the adhesion at the fiber matrix interface.…”
Wind energy is the kinetic energy of wind transformed into electrical energy by a system known as a wind turbine. All of the different parts of a wind turbine, like blades, hub, gearbox, nacelle, and tower, blades are usually made of glass and carbon fibers for better strength, lower weight, and better resistance to corrosion. The main limitations of these materials are the availability, non-biodegradable, health hazards, and fabrication cost. The development of interwoven fabric based on natural fiber for composite production is a novel approach that can be adopted to address the challenges of the balanced mechanical properties of composites. In this paper, alfa and wool fibers were selected as reinforcing materials to develop four woven fabrics, and unsaturated low viscosity epoxy resin was chosen as the matrix, the wovens were produced using the weaving of taffetas technique. The vacuum molding process was adopted to produce the hybrid composite due to its superior advantages over the hand lay-up technique. Alfa fibers have been previously treated with various concentrations of NaOH (1, 2, 3 mol) for 2 h. The effect of the alkaline treatment on the interface fiber matrix is analyzed. The results of static tests on composites showed an improvement in the tensile and flexural strengths of composites reinforced with woven fabrics. The mechanical performances of Alfa/wool yarns and fabrics obtained allow us to predict the actual perspectives of substitution of glass fibers by natural fibers for the application in wind blades.
“…Figure 2 shows a schematic of the woven manufacturing process and the prints of the manufactured woven are illustrated in Figure 3. The extraction of cellulose from the alfa plant was done with soda , we have already published an article on the method of extraction of cellulose from the alfa plant, 7 then the manual carding of the cellulose was done, then the spinning of the fibers to obtain continuous threads and finally the weaving of the taffetas type was done manually for 4 different types.Figure 1.Photographs of yarns.Figure 2.Woven preparation.Figure 3.Photographs of the manufactured woven.…”
Section: Methodsmentioning
confidence: 99%
“…6 In our case, we performed the treatment with NaOH. 7 The properties of fibers are linked to the concentration and duration of alkaline treatments. 8,9 Benyahia et al 10 study the effect of surface chemical changes on the composite properties of fiber polyester alfa mat, the scanning electron microscopy observations have shown that alkali-treatment enhanced the adhesion at the fiber matrix interface.…”
Wind energy is the kinetic energy of wind transformed into electrical energy by a system known as a wind turbine. All of the different parts of a wind turbine, like blades, hub, gearbox, nacelle, and tower, blades are usually made of glass and carbon fibers for better strength, lower weight, and better resistance to corrosion. The main limitations of these materials are the availability, non-biodegradable, health hazards, and fabrication cost. The development of interwoven fabric based on natural fiber for composite production is a novel approach that can be adopted to address the challenges of the balanced mechanical properties of composites. In this paper, alfa and wool fibers were selected as reinforcing materials to develop four woven fabrics, and unsaturated low viscosity epoxy resin was chosen as the matrix, the wovens were produced using the weaving of taffetas technique. The vacuum molding process was adopted to produce the hybrid composite due to its superior advantages over the hand lay-up technique. Alfa fibers have been previously treated with various concentrations of NaOH (1, 2, 3 mol) for 2 h. The effect of the alkaline treatment on the interface fiber matrix is analyzed. The results of static tests on composites showed an improvement in the tensile and flexural strengths of composites reinforced with woven fabrics. The mechanical performances of Alfa/wool yarns and fabrics obtained allow us to predict the actual perspectives of substitution of glass fibers by natural fibers for the application in wind blades.
Increasing environmental awareness and concerns about global warming have resulted in a significant demand for sustainable and eco-friendly resources, such as naturally available fibers, that can be suitable alternatives to petroleum/synthetic materials such as glass, carbon and Kevlar in reinforced composites. The exploration of natural fibers as reinforcements in composites is increasing in popularity, particularly in the development of transport and household components. However, natural fibers also have a few limitations that should be addressed appropriately, including lack of compatibility between fiber-matrix, fiber swelling, excess absorption of moisture, resistance to chemicals and fire. Consequently, various processes have been used to improve the fiber surface, to obtain a better fiber–matrix interface. The primary objective of this work is to review the impact that a 5 % NaOH (sodium hydroxide) treatment has on the chemical, mechanical, and thermal properties of natural fiber-reinforced composites (NFRC).
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