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Stimuli responsive conductive polyaniline membrane: in-filtration electrical tuneability and anti-fouling performance

Authors： Lili Xu 1，2，3，4，5, Emma Emanuelsson 2, Jun Wang 1，3，4，5

Units： 1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing, 100085, China 2. Department of Chemical Engineering, University of Bath, Bath, United Kingdom, BA2 7AY. 3. National Engineering Laboratory for Industrial Wastewater Treatment, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing, 100085, China 4. National Engineering Laboratory for Industrial Wastewater Treatment, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing, 100085, China. 5. University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, China

KeyWords： polyaniline, electrically tuneablility, membrane fouling, smart membrane

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2018,38(3):55-62

Abstract：

As conventional membranes cannot have their physical and chemical properties tuned in-situ to offer control of membrane performance during operation, there is a need for stimuli responsive membranes which can self-regulatively adjust their performance in response to chemical and/or physical stimuli in the environments. Despite extensive efforts in designing electrically conductive polyaniline (PANI) membranes, there remains an insufficient understanding of the electrically induced transformations in these membranes, especially the control over membrane separation and transportation through the application of electrical potentials.
In this study, we focused on the electrical tuneability of PANI membrane in response to the externally applied potential and firstly proposed the hypothesis of electrical tuneability in PANI membranes. PANI was synthesised via chemical oxidation of aniline whereby PAMPSA serve as templates and flat sheet PANI membranes were prepared via non-solvent induced phase separation (NIPS). In terms of tuneable properties under applied electrical potential, the permeance of the in-situ doped PANI-PAMPSA membrane could be varied during cross-flow filtration and bovine serum albumin (BSA) foulant could be removed. This new PANI synthesis method therefore opens the pathway for more filtration stable electrically tuneable membranes to be produced, enabling a new range of applications to be developed (such as anti-fouling membranes).

Funds：

国家重点研发计划课题2016YFC0400501，国家自然科学基金51578533

AuthorIntro：

徐莉莉，1988年11月，山东蓬莱，研究方向：电响应膜制备与应用，E-mail：xllmyname@163.com

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