文章信息/Info

Title:

Progress in the Research of Electrospun Nanofibers for Membrane Separation Applications

作者:

李雄; 王雪芬^*

東華大學 纖維材料改性國家重點實驗室，上海 201620

Author(s):

LI Xiong;  WANG Xuefen^*

State Key Laboratory For Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China

關鍵詞:

靜電紡絲; 納米纖維; 膜分離; 水凈化

DOI:

10.7502/j.issn.1674-3962.2014.08.04

文獻標志碼:

A

摘要:

近年來，由靜電紡絲技術制備的納米纖維多孔膜具有纖維纖度細、表面積大、孔隙率高等形態特點，以及兼具良好的機械強度、輕質輕量和易功能化而在過濾基膜分離領域的應用研究倍受各國研究者的關注�，F有的高分子材質微濾膜多采用溶液相轉化法，然而由該方法所制備的微濾膜孔隙率較低并且所形成的微孔部分為閉孔結構；而靜電紡納米纖維多孔膜的孔隙率高且為相互貫通的開孔結構，能夠顯著改善流通性，是非常好的微孔濾膜。本文綜述了近幾年來納米纖維作為過濾材質以及過濾用支撐材質在膜分離技術領域的研究成果，主要從納米纖維微孔濾膜以及納米纖維基復合濾膜用于水凈化及脫鹽淡化等幾個方面進行相關概述，并對納米纖維基濾膜的應用研究前景進行了展望。

Abstract:

Nanofibrous mats, mainly fabricated by electrospinning technique, have gained substantial attention in the field of filtration-based membrane separation technology due to their unique morphology properties including small fiber diameter, high surface-to-volume ratio, high porosity, good mechanical properties, light weight, accessible functionalization, etc. As compared to the larger thickness, relatively lower porosity and disconnected microporous structures of polymer phase inversion membranes, the electrospun nanofibrous scaffolds exhibited high porosity and fully interconnected porous structures resulting in the remarkable improvement of permeability. In this paper, we summarize recent research progress in the field of membrane separation technology based on nanofibrous substrate filtration medium, and highlights the application of water purification and seawater desalination from nanofibrous microfiltration membrane and thin film nanofibrous composite (TFNC) filtration membrane. The future outlook of nanofibrous filtration membrane will also be discussed