文献类型：期刊文献

英文题名：Effects of ethanol and isopropanol on the structures and properties of polyethersulfone/perfluorosulfonic acid nanofibers fabricated via electrospinning

作者：Lu, Pei-Pei[1,2];Xu, Zhen-Liang[1,2];Yang, Hu[1];Wei, Yong-Ming[1];Xu, Hai-Tao[1]

机构：[1]E China Univ Sci & Technol, Membrane Sci & Engn R&D Ctr, Chem Engn Res Ctr, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2012

卷号：19

期号：4

外文期刊名：JOURNAL OF POLYMER RESEARCH

收录：;EI(收录号：20121914996627);WOS:【SCI-EXPANDED(收录号:WOS:000302642100006)】；

基金：The authors would like to thank for financial support by the Key Technology R&D Program of China (20092X02032). Also we are grateful to Dr. Ling-Feng Han to help for the measurement of SEM pictures of these nanofibers.

语种：英文

外文关键词：Electrospinning; Nanofiber; Polyethersulfone; Perfluorosulfonic acid; Non-solvent

摘要：Blend solutions of polyethersulfone (PES) and perfluorosulfonic acid (PFSA) resin were fabricated into nanofibers via electrospinning. Ethanol (EtOH) and isopropanol (IPA) were employed to investigate the effects of non-solvent (NS) on the structures and properties of the electrospun PES/PFSA nanofibers. Average diameters of the electrospun nanofibers increased with NS content while the water contact angles of the nanofiber membranes decreased. Although all the nanofiber membranes presented strong hydrophobicity initially, the water contact angle would drop to less than 90 degrees within 30 min. Energy dispersive X-ray spectrums (EDS) showed that the nanofibers electrospun from solutions with more NS presented higher sodium content on the surface because more -SO3Na groups were on the external plane. N-2 adsorption-desorption measurement revealed that increase of NS content in the solvent mixtures resulted in nanofibers with surface area much bigger in experiment than that in calculation, which meant rough structures occurred on the surface of electrospun nanofibers. These rough structures were beneficial to improve the frictional resistance between nanofibers and therefore enhanced the break strength and Young's modulus of the nanofiber membranes.