A nanofiber based filter composed of electrospun PA 66/TiO2 nanofibers for removal of cement dust
ABSTRACT In the present work, a novel nanofiber based filter has been presented which is comprised of composite nanofibers of polyamide 66 and TiO2 nanoparticles (PA 66/TiO2) for trapping cement dust. The produced nanofibers under optimum conditions were characterised by Fourier transform infrared spectroscopy (FT IR) scanning electron microscopy (SEM) transmission electron microscopy (TEM) and X ray diffraction (XRD) The effect of some important electrospinning process parameters on the obtained electrospun nanofibers including solution concentration, flow rate, voltage, tip to collector distance and the presence of salt was investigated. Studies showed that the solution concentration of 15 wt. of PA 66 resulted in thinner and smother nanofibers than the other solution concentrations and also the average diameter of the electrospun nanofibers was decreased with increasing 1 wt. salt to the polymer solution. The produced nanofiber based filter can be applied for capturing cement dust with a good filtration efficiency of 97% for 3 500 nm particles and a quality factor in the range of 0.069 0.034 Pa 1
International Journal of Environmental Analytical Chemistry