期刊
ENGINEERING
卷 6, 期 1, 页码 89-99出版社
ELSEVIER
DOI: 10.1016/j.eng.2019.10.012
关键词
Ceramic hollow fiber; Inner membrane; Pervaporation; Polydimethylsiloxane; Butanol
资金
- National Key Basic Research Program [2017YFB0602500]
- National Natural Science Foundation of China [21922805, 21776125, 21490585, 51861135203]
- Innovative Research Team Program by the Ministry of Education of China [IRT17R54]
- Topnotch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
The fabrication of a separation layer on the inner surface of a hollow fiber (HF) substrate to form an HF composite membrane offers exciting opportunities for industrial applications, although challenges remain. This work reports on the fabrication of a polydimethylsiloxane (PDMS) composite membrane on the inner surface of a single-channel or multi-channel ceramic HF via a proposed coating/cross-flow approach. The nanostructures and transport properties of the PDMS HF composite membranes were optimized by controlling the polymer concentration and coating time. The morphology, surface chemistry, interfacial adhesion, and separation performance of the membranes were characterized by field-emission scanning electron microscope (FE-SEM), attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy, the nano-indentation/scratch technique, and pervaporation (PV) recovery of bio-butanol, respectively. The formation mechanism for the deposition of the PDMS layer onto the inner surface of the ceramic HF was studied in detail. The optimized inner surface of the PDMS/ceramic HF composite membranes with a thin and defect-free separation layer exhibited a high flux of similar to 1800 g.m(-2).h(-1) and an excellent separation factor of 35-38 for 1 wt% n-butanol/water mixtures at 60 degrees C. The facile coating/cross-flow methodology proposed here shows great potential for fabricating inner-surface polymer-coated HFs that have broad applications including membranes, adsorbents, composite materials, and more. (C) 2020 THE AUTHORS. Published by Elsevier LTD on behalf of Chinese Academy of Engineering and Higher Education Press Limited Company.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据