Thermal and morphological properties of electro spun polyamide – poly vinyl alcohol/CNPs nanofibers for filtration process

Abstract

This study aims to prepare the carbon nanoparticles (CNPs) composites based polyamide 6,6 (PA66) via in situ polymerization process. Branch (PA 66) were created by simple condensation polymerization. The electrospinning technique (EST) to produce PVA and PA66 reinforced with (CNPs) nanofibers was used under limit conditions. Several testing including (AFM, SEM, FTIR, and DSC) were performed on the samples. FTIR results demonstrated the production of PA66 absorption peaks that are identical to the standard sample. The DSC results showed the addition of CNPs to PA66 leads to an increase the Tg, a decrease the Tm, and an increase Tdec. strongly. The AFM results revealed that EST formed a homogeneous porosity, and that the bearing index of the surface increased as the concentration of CNPs increased. The SEM results demonstrated that EST produced nanofibers with a uniform form and an average diameter about 350 nm that decreased with increasing CNP concentration. The results also indicated that the sample with the best morphology, suitable porosity, free beads, and best alignment of nanofibers is a sample (C), which has less than 500 nm of nanofibers diameter, roughness range about 197 nm, pore sizes range about 1000 nm, and bearing index about 0.11.