Yu Yuxi, Ma Rui, Yan Shaole, Fang Jiyu
Department of Materials Science and Engineering, College of Materials, Fujian Key Laboratory of Advanced Materials, Xiamen University Xiamen 361005 China
Department of Materials Science and Engineering and Advanced Materials Processing and Analysis Center, University of Central Florida Orlando Florida 32816 USA.
RSC Adv. 2018 Mar 28;8(22):12173-12178. doi: 10.1039/c8ra01442f. eCollection 2018 Mar 26.
We report the formation of multi-layer nylon-6 (PA-6) nanofibrous membranes by electrostatic spinning coupled with a hot pressing process. The structure and porosity of multi-layer PA-6 nanofibrous membranes were characterized using a scanning electron microscope and the N nitrogen adsorption and desorption isotherms. We show that multi-layer PA-6 nanofibrous membranes can be used for efficient and continuous indigo dye filtration. Under the condition of constant pressure at the 0.1 MPa dead end filtration, continuous filter for a period of time, the filtration efficiency for indigo dye increases with the increase of the number of layers in PA-6 nanofibrous membranes. The 10 layer PA-6 nanofiber membrane can completely remove the indigo dye, and early filtration flux was high, with extended time, the filtration flux decline and gradually stabilized.
我们报道了通过静电纺丝结合热压工艺制备多层尼龙-6（PA-6）纳米纤维膜的方法。使用扫描电子显微镜和N₂氮吸附-脱附等温线对多层PA-6纳米纤维膜的结构和孔隙率进行了表征。我们表明，多层PA-6纳米纤维膜可用于高效连续的靛蓝染料过滤。在0.1MPa死端过滤恒压条件下，连续过滤一段时间，PA-6纳米纤维膜对靛蓝染料的过滤效率随层数增加而提高。10层PA-6纳米纤维膜可完全去除靛蓝染料，初期过滤通量较高，随着时间延长，过滤通量下降并逐渐稳定。
