The effect of processing parameters on the quality of electrospun polyacrylic acid nanofibers
Electrospinning is an emerging technology to produce continuous polymer fibers with diameters in the range of nanometer to a few microns for various applications. Polyacrylic acid (PAA) is an important material for metal ion complexation and for nanocomposite materials synthesis. In this study, we systematically investigated the processing parameters on the morphology and stability of the electrospun ultrafine PAA nanofibers. We show that a higher concentration (up to 25 wt％) favored the formation of uniform PAA nanofibers, whereas at the concentration of 10 wt％, only bead structures were produced. Increasing the applied voltage (up to 22.5 kV) resulted in more uniform PAA nanofibers. In addition, longer collection distance (20 cm) was beneficial for the evaporation of solvent and for decreasing the adhesion between nanofibers, thus leading to the nanofibrous mats with high porosity. Finally, the PAA nanofibers could be rendered water-insoluble by heating the electrospun composite PAA/polyvinyl alcohol (PVA) nanofibers at 145 C for 30 min. The resulting fiber exhibited excellent water stability even after immersing in water for a week. The fabricated PAA/PVA nanofibers may find various applications in ultrafiltration, separation, and environmental sciences.
Electrospinning nanofiber polyacrylic acid
Shili Xiao Mingwu Shen Rui Guo Shanyuan Wang Xiangyang Shi
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Textiles, College of Chemistry, Chemical Engineering, and Biotechnology, Donghua University, Shanghai 201620, College of Textiles, Donghua University, Shanghai 201620, China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry,
国际会议
上海
英文
797-801
2009-05-27（万方平台首次上网日期，不代表论文的发表时间）