Objectives: The study examines natural fibers' mechanical and thermal properties, specifically cellulose-based flax and banana fibers. Flax fibers are noted for their low density, high tensile strength, and rigidity, while banana fibers are recognized for their flexural strength and damping properties. However, treatments applied to these composites can negatively affect mechanical performance and surface integrity. The objectives of the research include comparing the properties of both fiber types, enhancing tensile strength through recycled cotton blends, evaluating the micro-structural characteristics of non-woven textiles for potential applications and sustainability, analyzing the elemental composition of nanomaterials, and investigating air permeability in relation to pore structure. Methods: The Energy-dispersive X-ray spectroscopy detector is incorporated into both transmission electron microscopy (TEM) and scanning electron microscopy (SEM) systems, which are employed for high-energy measurements. The analysis of the air permeability was carried out to evaluate how the pore structure affects its capacity to allow the passage of air/vapours. A testing analysis conducted by SITRA-South Indian Textile Research Association, Coimbatore utilized the Tex-test FX-3300-III, S/n:1198 Air permeability tester, following the guidelines of ASTM D 737-04 (2016) and IS 11056:2013, indicating that the static air permeability strength was notably enhanced. Findings: To determine if nanoparticles were present in the non-woven textiles, the microstructure of the non-wovens was examined at different EDS locations. Various elements were identified at each EDS site within the blended non-woven webs, along with variations in the elements' relative weights, atom counts, and K ratios. In an air permeability test, non-woven-1, made from banana-recycled cotton, exhibited higher values compared to non woven-2, which consisted of flax-recycled cotton. Novelty and applications: This research focuses on creating sustainable textiles by blending varying proportions of banana, flax, and recycled cotton, presenting an alternative to traditional single-fiber textiles. The study also introduces textile waste regeneration as a novel concept. Through the EDS Spots system, elements are identified and compared, offering valuable insights for potential technical applications. Permeability analysis evaluates the pore structure of the composite nonwoven materials, which are recognized as superior substitutes for synthetic glass fibers due to their elevated cellulose content. Their outstanding mechanical and thermal properties make them highly suitable for technical applications in the construction and automobile sectors. Keywords: Banana/flax fibers, Recycled cotton, Energy-dispersive X-ray spectroscopy, Air permeability, SEM-Scanning electron microscopy
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