氧化石墨烯改性PVDF超滤膜制备及分离性能

doi:10.11949/j.issn.0438-1157.20170217

化工学报 ›› 2017, Vol. 68 ›› Issue (9): 3466-3473.DOI: 10.11949/j.issn.0438-1157.20170217

氧化石墨烯改性PVDF超滤膜制备及分离性能

薛娟琴¹, 王森^1,2, 韩小龙^2,3, 王玉琪², 李继定³

1 西安建筑科技大学冶金工程学院, 陕西西安 710055;
2 西北大学化工学院, 陕西西安 710069;
3 化学工程联合国家重点实验室, 清华大学化学工程系, 北京 100084

收稿日期:2017-03-07 修回日期:2017-05-22 出版日期:2017-09-05 发布日期:2017-09-05
通讯作者: 韩小龙
基金资助:
国家自然科学基金项目（51478379，51278407）；化学工程联合重点实验室开放基金项目（SKL-ChE-16A04）；陕西省教育厅专项科研计划项目（16JK1755）。

Prepartion and separation performance of GO modified PVDF ultrafiltration membrane

XUE Juanqin¹, WANG Sen^1,2, HAN Xiaolong^2,3, WANG Yuqi², LI Jiding³

1 School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China;
2 School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China;
3 The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2017-03-07 Revised:2017-05-22 Online:2017-09-05 Published:2017-09-05
Contact: 10.11949/j.issn.0438-1157.20170217
Supported by:
supported by the National Natural Science Foundation of China (51478379,51278407),the State Key Laboratory of Chemical Engineering (SKL-ChE-16A04) and the Natural Science Foundation of Education Department of Shaanxi Provincial Government (16JK1755).

摘要/Abstract

摘要：

用N-（三甲氧基硅丙基）乙二胺三乙酸钠（EDTS）对氧化石墨烯进行修饰，制备出亲水的EDTS-GO纳米复合物。然后通过共混的方式将EDTS-GO添加到PVDF中，制备出EDTS-GO改性PVDF超滤膜。接触角分析和红外光谱结果表明，在相转化过程中EDTS-GO转移至膜表面，PVDF膜表面的亲水性增强。系统考察了不同EDTS-GO添加量对膜性能的影响。膜性能测试表明，随着EDTS-GO添加量的增加，PVDF膜的纯水通量先增大然后降低，当添加量为0.5%时，纯水通量达到最大值，711.2 L·（m²·h）^-1。此外，抗污染实验表明，EDTS-GO改性的PVDF超滤膜比未改性的PVDF超滤膜具有更强的抗污染性能。

关键词: EDTS-GO纳米复合物, PVDF超滤膜, 抗污染性能

Abstract:

EDTS-GO nanocomposites were prepared by decorating graphene oxide (GO) with N-(trimethoxysilylpropyl) ethylenediaminetriacetic acid sodium (EDTS). Then EDTS-GO modified PVDF ultrafiltration membrane was prepared by introducing EDTS-GO through blending method. Contact angle results indicated that the hydrophilicity of PVDF membrane was improved owing to introducing EDTS-GO. This was due to EDTS-GO transferring to membrane surface during phase inversion, which was confirmed by FTIR. The effect of the EDTS-GO addition content on membrane property was investigated systematically. With an increase in EDTS-GO content, the water flux of EDTS-GO modified PVDF membrane initially increased and then decreased and reached to maximum of 711.2 L·(m²·h)^-1 in the 0.5% content. Furthermore, antifouling experiment demonstrated EDTS-GO modified PVDF ultrafiltration membrane possessed the stronger fouling-resistant performance than pristine PVDF ultrafiltration membrane.

Key words: EDTS-GO nanocomposites, PVDF UF membrane, antifouling performance

中图分类号:

TQ028.8

薛娟琴, 王森, 韩小龙, 王玉琪, 李继定. 氧化石墨烯改性PVDF超滤膜制备及分离性能[J]. 化工学报, 2017, 68(9): 3466-3473.

XUE Juanqin, WANG Sen, HAN Xiaolong, WANG Yuqi, LI Jiding. Prepartion and separation performance of GO modified PVDF ultrafiltration membrane[J]. CIESC Journal, 2017, 68(9): 3466-3473.

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氧化石墨烯改性PVDF超滤膜制备及分离性能

Prepartion and separation performance of GO modified PVDF ultrafiltration membrane

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