ResearchGate |
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Production of Parallel Aligned Nanofiber Rovings From Continuous Bundles |
![]() This study presents a novel approach to converting electrospun polyacrylonitrile (PAN) nanofiber bundles into rovings, essential for nanofiber yarn spinning, through the implementation of false twisting and drawing processes. The false twisting process is optimized by varying the input bundle angle (40° to 60°), twister type (A, B, C), and rotation speed (20, 50, and 80 rpm). A bundle input angle of 55°, twister type B, and a twister rotation speed of 80 rpm show the best results in terms of longer twisted length, lower average thickness, and thickness variation values. The morphological, physical, and mechanical properties of the resulting nanofiber rovings for drawing process |
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2025-02-01 Read more about this article in source |
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A comparative fractographic analysis for the effect of polymeric nanofiber reinforcements on the tensile behavior of multi-layered epoxy nanocomposites
This study presents a comparative investigation into the effects of four different nanofibers—PA66, PStX, PAN, and PVB—on the mechanical performance and failure mechanisms of epoxy adhesive films. These nanofiber‐reinforced adhesive layers were manufactured via a dry‐reinforcement resin film infusion method and tested under uniaxial tensile loading. Mechanical results showed that PA66 and PStX nanofibers improved tensile strength by up to 25%, primarily by mitigating crack initiation at free edges and promoting effective fiber–matrix bonding. In contrast, PAN nanofibers induced micro‐cracks at the fiber–resin interface, amplifying crack coalescence and reducing strength by 25%. 03/01/2025