Citation: Li Jingang, Li Shuwen, Wang Xiaohui, Fan Fan, Zhao Kongyin, Wei Junfu, Zhang Linhua, Zhu Dunwan. Biologically inspired silk fibroin grafted polyacrylonitrile filtration membrane prepared in ZnCl₂ aqueous solution[J]. Chinese Chemical Letters, ;2019, 30(1): 239-242. doi: 10.1016/j.cclet.2018.07.016 shu

Biologically inspired silk fibroin grafted polyacrylonitrile filtration membrane prepared in ZnCl₂ aqueous solution

Li Jingang ^a ,
Li Shuwen ^a ,
Wang Xiaohui ^a ,
Fan Fan ^b ,
Zhao Kongyin ^a,, ,
Wei Junfu ^a ,
Zhang Linhua ^b ,
Zhu Dunwan ^b,,

a.
State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China
b.
Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China

Corresponding author: Zhao Kongyin, zhaokongyin@tjpu.edu.cn Zhu Dunwan, zhudunwan@bme.pumc.edu.cn
Received Date: 15 May 2018
Revised Date: 22 June 2018
Accepted Date: 23 July 2018
Available Online: 26 January 2018

Figures(4)

In this study, biologically inspired silk fibroin grafted polyacrylonitrile (SF-g-PAN) filtration membrane was prepared using ZnCl₂ aqueous solution as solvent, avoiding the use of organic solvents. Phase inversion occurred when Zn²⁺ and Cl^- ions gradually diffused into water, creating a well-connected ion channel network and the SF-g-PAN filtration membrane was obtained. The membranes were observed by SEM and 3D ultra-depth microscope. The hydrophilic property, pore size distribution and dye rejection of the membrane were investigated. Results showed that the membrane has no finger hole formation because ZnCl₂ aqueous solution has a lower curing rate parameter compared with organic solvents. SF-g-PAN membrane possessed good anti-fouling properties and pH sensitivity. The pore size distribution of the SF-g-PAN membrane was 0.25-1.04 nm. The rejection of direct yellow 27 (Mw=662.6) and amaranth (Mw=604.5) was 96.51% and 30.63%, with the flux of 72.32 L m^-2 h^-1 and 73.83 L m^-2 h^-1 respectively at 0.1 MPa. The SF-g-PAN membrane has a wide range of applications prospect in fine separation, dye desalination, waste water treatment and biomedical fields.
- Biologically inspired membrane,
- Silk grafted polyacrylonitrile,
- ZnCl₂ aqueous solution,
- Narrow pore size distribution,
- pH-Sensitivity,
- Anti-fouling
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Biologically inspired silk fibroin grafted polyacrylonitrile filtration membrane prepared in ZnCl2 aqueous solution

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通讯作者: 陈斌, bchen63@163.com

Biologically inspired silk fibroin grafted polyacrylonitrile filtration membrane prepared in ZnCl₂ aqueous solution