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首页> 外文期刊>Journal of Polymers and the Environment >Preparation and Characterization of Electrospun Polyurethane Nanofibrous Microfiltration Membrane
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Preparation and Characterization of Electrospun Polyurethane Nanofibrous Microfiltration Membrane

机译：电纺聚氨酯纳米纤维微滤膜的制备与表征

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摘要

Herein, the preparation of polyurethane nanofibrous microfiltration membranes, with electrospinning and then dip-coating methods was reported. The study of process parameters (i.e. needle-free electrospinning and dip-coating condition) on the membrane properties was also conducted. The different pore sizes of the prepared MF membranes (e.g. 0.23, 0.33, and 0.47 mu m) is orchestrated through the adjustment of various electrospinning and dip-coating parameters. The capability of these membranes to simultaneously eliminate the sources of water pollution, i.e. micro-particles and bacteria, has been demonstrated. Specifically, the prepared membranes could thoroughly reject theE. coliBL21 (DE3) bacteria (similar to 97-99%) as well as micro-particles through size extrusion mechanism (similar to 95-99%), while they retained a high permeation flux (similar to 65,400, similar to 40,000 and similar to 25,700 (L/m(2) h bar) for 0.46, 0.33, and 0.25 mu m pore size, respectively). In addition, a comparison between nanofibrous MF membranes and their commercial counterparts from both utility and effectiveness standpoint was conducted and the obtained result indicated the supreme performance of these membranes in comparison with the commercial membranes of the same mean pore size, also with almost double or triple higher flux.
机译：这里，报道了具有静电纺丝然后浸涂方法的聚氨酯纳米纤维微滤膜的制备。还进行了对膜特性的工艺参数（即无针电纺丝和浸涂条件）的研究。通过调节各种静电纺丝和浸涂参数，通过调节制备的MF膜（例如0.23,0.33和0.47μm）的不同孔径。这些膜的能力同时消除了水污染源，即微粒和细菌。具体地，制备的膜可以彻底地拒绝。 Colibl21（DE3）细菌（类似于97-99％）以及通过尺寸挤出机制的微粒（类似于95-99％），而它们保留了高渗透通量（类似于65,400，类似于40,000且类似于40,000 25,700（L / M（2）H棒）分别为0.46,0.33和0.25 mu m孔径）。此外，进行了纳米纤维MF膜与来自效用和有效性观点的商业对应物的比较，并且获得的结果表明，与相同平均孔径的商业膜相比，这些膜的最高性能也与几乎双或三倍较高的助焊剂。

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