Effects of Processing Parameters on Diameter and Morphology of Electrospun Poly (Acrylic Acid) Nanofibers

In this study, we have focused on the preparation of electrospun poly (acrylic acid) (PAA) nanofibers. PAA solutions were prepared in water as solvent. The effect of polymer concentration, distance between the needle tip and collector, applied voltage and solution feeding rate have been investigated on the morphology and nanofiber diameter. SEM evidences showed the morphology of the fibers significantly was dependant on the PAA concentration. The effect of PAA concentration on the average diameter of nanofibers was very remarkable and the average diameter increased upon increasing of PAA concentration. The diameter of nanofibers was increased by increasing the applied voltage. Also, the smallest diameter of PAA nanofibers was obtained from working distance of 20 cm. The feeding rate did not show any change on the morphology and diameter of nanofibers at a range of 0.3 to 0.7 ml/h which was carried out in this study

کلیدواژه ها:

nanofibers ، electrospinning ، poly(acrylic acid) ، morphology ، nanofiber diameter