Polyamide 6.6/Bismuth (III) Oxide Electrospun Nanocomposites for Potential Applications in Electronics

Abstract In this study, it is aimed to observe electrospinnability of bismuth oxide (Bi2O3) microparticles via polymer solution and effect of loading on electrical insulating property of electrospun composite structure. For that purpose, polyamide 6.6 polymer (PA6.6) with high dielectric constant was loaded with bismuth oxide microparticles and it was used for coating polyester spunbonds by electrospinning technique. Morphological properties, thermal behaviors and electrical resistance of coated spunbonds were investigated. Scanning electron microscopy (SEM) and electron dispersive X-ray spectroscopy (EDX) showed that Bi2O3 was succesfully adapted into fiber structure and nano-scale PA6.6/Bi2O3 composite fibers were obtained. Thermal behaviors of coated samples were developed by increasing Bi2O3 loading according to differential scanning calorimetry (DSC) and thermogravimetic analysis (TGA) results. Addition of Bi2O3 caused remarkable increase on electrical resistance of PA6.6 electrospun surfaces. Bi2O3 /PA6.6 nanocomposite fibers are promising and good candidates for thin electrically insulating polymer-based structures for micro- or nanodimensional devices.