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| Preparation and characterization of SGO/PVDF-g-PSSA composite proton exchange membrane and its anti-fouling properties |
| LI Cui-cui1,2,3,4, WANG Lei1,2,3,4, LI Chen1,2,3,4, WANG Xu-dong1,2,3,4, XU Qi-bin1,2,3,4 |
1. School of Environment and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. Research Institute of Membrane Separation Technology of Shaanxi Province, Xi'an 710055, China;
3. Key Laboratory of Membrane Separation of Shaanxi Province, Xi'an 710055, China;
4. Key Laboratory of Environmental Engineering of Shaanxi Province;Xi'an 710055, China |
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Abstract In order to improve the performance of PVDF-g-PSSA proton exchange membrane, SGO/PVDF-g-PSSA composite proton exchange membrane was prepared by mixing sulfonated graphene oxide (SGO) with PVDF-g-PSSA copolymer. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and X-ray detector (XRD) were used to confirm the successful sulfonation of GO. The composite membrane was characterized by SEM and the main properties of the composite membranes were investigated. The optimal SGO dosing amount was obtained. The dissipative quartz crystal microbalance (QCM-D) was used to investigate the anti-fouling performance of the composite membranes. The results showed that when the SGO addition amount was 1.0%, the overall performance of composite membrane was optimized, the water content reached 44.34%, and the proton conductivity was 0.085S/cm. The QCM-D experiments showed that the BSA adsorption amount on the surface of the composite membrane was the lowest under pure water and 50mmol/L PBS, and |ΔD/ΔF| was the largest, indicating that the adsorption layer was loose and the composite membrane had better anti-fouling properties.
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Received: 08 June 2018
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