Abstract
Abstract: In this study, research was conducted on Vectran ® fibers (highly heat resistant, high strength, lightweightindustrial fibers) to determine their suitability for use in the development of hybrid wires and cables. Vectran fiberswere heat-treated to various temperatures and treated with HCl and NaOH solutions under various conditions. Theeffects of heat, HCl, and NaOH treatment on the creep behaviors, mechanical properties, and surface properties of Vec-tran fibers were examined. X-ray diffraction (XRD) analysis was used to investigate crystallinity changes; while Fou-rier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were used to analyzechemical structure changes resulting from degradation. Analysis showed that the mechanical properties and crystallin-ity of Vectran fibers changed significantly by treatment at temperatures greater than 250 o C. Although HCl treatmentsdid not cause significant changes, NaOH treatments resulted in considerable changes in the surface and mechanicalproperties and crystallinity. FT-IR and XPS analyses indicated that the degradation resulted from the hydrolysis of esterbonds in the fibers. Keywords: Vectran
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