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Yogesh Hande
Polyacrylonitrile (PAN) fibers are essential precursors for high-performance carbon fibers, recognised for their significant carbon yield and mechanical strength. This review investigates the spinning methods of PAN fibers, focusing on wet spinning and dry-jet wet spinning, while utilising recent research to analyse their mechanisms, chemical characteristics, and results.
Shyambabu K. Sainik, Prasanta K. Panda
Polyester-based geosynthetics are widely employed in civil engineering applications owing to their high mechanical performance and cost-effectiveness. However, exposure to aggressive alkaline environments, such as high-pH soils and groundwater, significantly reduces their long-term durability. In this study, polyvinyl alcohol (PVA) was employed as a coating material for polyester yarns due to its intrinsic alkaline resistance and water solubility, reducing the need for organic solvents and enhancing environmental sustainability.
Nishant Chandel, Karishma Hemani, T V Sreekumar (BTRA), Rani Rohini(IIT Jammu)
Residual solvent content in the precursor fibers from polyacrylonitrile (PAN) is one of the key parameters that severely affects the mechanical properties of resultant carbon fibers to a large extent. Although its significance is well-known, the influence of precursor tow size (i.e., number of filaments) on the kinetics of solvent removal is not yet reported. In order to develop the relationship for better PAN precursor spinning line design, a computational model using MATLAB is presented.
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