Open AccessSOLVENT OPTIMIZATION OF ELECTROSPUN POLY(ACRYLIC ACID) NANOFIBERS
Author(s) -
M. Geysoğlu,
Funda Cengiz Çallıoğlu
Publication year - 2021
Publication title -
tex teh
Language(s) - English
Resource type - Journals
ISSN - 2068-9101
DOI - 10.35530/tt.2021.27
Subject(s) - distilled water , electrospinning , spinning , nanofiber , materials science , solvent , viscosity , chemical engineering , surface tension , acrylic acid , ethanol , composite material , polymer chemistry , nuclear chemistry , polymer , chemistry , chromatography , organic chemistry , copolymer , physics , quantum mechanics , engineering
In this study, it was investigated experimentally the influence of various solvents (distilled water andethanol) on the solution properties, spinning performance, and fibre morphology of the electro spun Poly(acrylic acid) nanofibers. Firstly, polymer solutions were prepared at 5 wt % PAA with various solvent ratios ofethanol and distilled water. Then, solution properties such as viscosity, density, pH, conductivity, and surfacetension were determined. The production of nanofiber samples was carried out by electrospinning under theoptimum process parameters (voltage, distance between electrodes, feed rate, and atmospheric conditions).Finally, the morphological characterization of the nanofiber surface was carried out with SEM. According to theresults, it was observed that conductivity, surface tension and the density of the solution increase as the ethanolratio decreases. On the other hand, pH value increases as the ethanol ratio increases and, so, the acidic value ofthe solutions decreases. The viscosity increased until the ethanol/distilled water ratio was 50/50 and thendecreased as the ethanol percentage decreased to under 50%. In addition, average fibre diameter decreaseswith ethanol ratio decreases. It is possible to say that solvent type affects solution properties, fibre morphologyand spinning performance significantly. Generally, fine, uniform and bead free nanofibers could be electro spunand the PAA solution containing 70 wt % distilled water and 30 wt % ethanol was selected as the optimum interms of fibre morphology, web quality and spinning performance.