Nanofiber membranes are extensively used in ultra- and micro-filtration purposes due to their high surface-to-volume ratio. However, nanofiber membranes do not have adequate strength to withstand forces acting on the filter surface, especially when using very low porosity membranes. In this study, PVC nanofiber mats and nanofiber composite membranes were fabricated through electrospinning and solvent casting technology. The membranes were characterized using scanning electron microscopy (SEM), porosimetry, and tensile strength tests. Analysis indicated that electrospun mats contain varying pore sizes (nano to micro) whose frequencies within the mat vary with fiber diameter. It was also established that mats fabricated from low solution concentration contain the largest percentage of pores. The mats’ tensile strength varied with fiber packing density, fiber assembly, and the density of fiber-to-fiber contact points. The tensile properties of the nanofiber composite membranes were found to be between those of the constituents and changed with change in the nanofiber layer thickness. The fabricated nanofiber composite membranes are intended for use in applications such as air ultra-filtration, acoustic filtration etc. The high porosity and small mesh pore size of electrospun nanofiber mats allow for removal of ultra-fine particles or microbes from contaminated air, water or other media.

中文翻译：

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静电纺聚氯乙烯聚合物纳米工程复合材料力学性能研究

纳米纤维膜因其高表面积与体积比而广泛用于超滤和微滤用途。然而，纳米纤维膜没有足够的强度来承受作用在过滤器表面的力，尤其是在使用孔隙率非常低的膜时。在这项研究中，PVC 纳米纤维垫和纳米纤维复合膜是通过静电纺丝和溶剂浇铸技术制造的。使用扫描电子显微镜 (SEM)、孔隙率测定法和拉伸强度测试对膜进行表征。分析表明，电纺毡包含不同的孔径（纳米到微米），其在毡内的频率随纤维直径而变化。还确定由低溶液浓度制成的垫子含有最大百分比的孔。垫子的拉伸强度随纤维堆积密度、纤维组装和纤维与纤维接触点的密度而变化。发现纳米纤维复合膜的拉伸性能介于各组分之间，并随着纳米纤维层厚度的变化而变化。制造的纳米纤维复合膜旨在用于空气超滤、声学过滤等应用。电纺纳米纤维垫的高孔隙率和小网孔尺寸允许从受污染的空气、水中或水中去除超细颗粒或微生物。其他媒体。