膜科学与技术

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Effect of supporting membrane on desulfurization performance of PEG/PVDF composite membrane

Authors： ZHANG Xingmei，ZHAO Yuhang，LI Xuekun，CAICAI Bin， HAN Xiaolong

Units： School of Chemical Engineering, Xi'an University, Xi'an 710065, Shaanxi, China; School of Chemical Engineering, Northwest University, Xi’an 710069, Shaanxi, China

KeyWords： PEG/PVDF composite membrane; pervaporation; desulfurization

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2021,41(2):56-62

Abstract：

In this paper, three kinds of PVDF ultrafiltration membrane with different pore size were prepared by phase inversion method using N-methylpyrrolidone, N, N-dimethylacetamide and triethyl phosphate as the solvents, and then the PEG/PVDF composite membranes were prepared by kinfie coating PEG solution. Scanning electron microscope (SEM), infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were used to characterize the surface and cross-section morphologies, functional groups, and crystallinity of the suppoting and the composite membrane, respectively. In addition, the pore size and porosity of the PVDF membrane were calculated and the desulfurization performance of the PEG/PVDF composite membranes were tested. The results indicate that the PVDF supporting membranes have great effect on the desulfurization performance of the PEG/PVDF composite membranes. Compared with N-methylpyrrolidone and N, N-dimethylacetamide, triethyl phosphate is more suited as phase conversion solvent to prepare the PVDF supporting membrane, and accordingly the prepared PEG/PVDF composite membrane has best desulfurization performance.

Funds：

陕西省重点研发计划一般项目（2019GY-207），陕西省教育厅专项科研计划项目（17JK1121），大学生创新训练项目（S201911080052）

AuthorIntro：

张杏梅（1975-），陕西大荔人，博士，副教授，研究方向为膜分离技术。 E-mail:zhxm_v@163.com.

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