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Amphiphobic surface modification of electrospun nanofibrous membranes for anti-wetting performance in membrane distillation
An, Xiaochan1,3; Liu, Zhongyun1; Hu, Yunxia2
2018-04-15
发表期刊DESALINATION
ISSN0011-9164
卷号432页码:23-31
摘要Membrane distillation (MD) works as a promising alternative of RO to desalinate hypersaline water owing to its unique advantages including high concentration brine tolerance, 100% theoretical solute rejection, and low operating pressure. Hydrophobic MD membranes face critical challenge to treat industrial wastewaters containing low surface tension substances because these substances led to membrane wetting with loss of membrane permeability and rejection. In this study, we report a simple and facile approach to fabricate amphiphobic polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) electrospun nanofibrous membranes with anti wetting property. 1H,1H,2H,2H-perfluorodecyltriethoxysilane (FAS) was used to fluorinate PVDF-HFP fibers and was then crosslinked to form a network upon dealcoholization under thermal treatment. The FAS-coated PVDF-HFP nanofibrous membranes exhibited great stable amphiphobicity with high contact angles against both water and oil, even challenged under critical conditions including boiling water, and strong base and acid etchings. Surface fluorination of PVDF-HFP nanofibrous membrane with the FAS coating did not sacrifice its permeate flux and salt rejection much. The fabricated amphiphobic nanofibrous membrane exhibited robust MD performance in the long-term operation and also in the presence of surfactant sodium dodecyl sulfate in the feed saline solution.
关键词Amphiphobic Surface Modification Membrane Distillation Anti-wetting Electrospinning Nanofibrous Membrane
DOI10.1016/j.desal.2017.12.063
项目资助者National Natural Science Foundation of China(21476249) ; Key Science and Technology Program of Yantai City(2015ZH063) ; State Key Laboratory of Separation Membranes and Membrane Processes (Tianjin Polytechnic University)(M1-201503)
收录类别SCI
关键词[WOS]SUPEROLEOPHOBIC SURFACES ; SUPERAMPHIPHOBIC FABRICS ; WASTE-WATER ; ROBUST ; COATINGS ; DESALINATION ; POLYMER ; ENVIRONMENT ; TECHNOLOGY ; SEPARATION
文章类型Article
语种英语
WOS研究方向Engineering ; Water Resources
WOS类目Engineering, Chemical ; Water Resources
WOS记录号WOS:000428103300003
出版者ELSEVIER SCIENCE BV
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/24026
专题山东省海岸带环境工程技术研究中心
通讯作者Hu, Yunxia
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn & Technol Shandong, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China
2.Tianjin Polytech Univ, Sch Mat Sci & Engn, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位中国科学院烟台海岸带研究所
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An, Xiaochan,Liu, Zhongyun,Hu, Yunxia. Amphiphobic surface modification of electrospun nanofibrous membranes for anti-wetting performance in membrane distillation[J]. DESALINATION,2018,432:23-31.
APA An, Xiaochan,Liu, Zhongyun,&Hu, Yunxia.(2018).Amphiphobic surface modification of electrospun nanofibrous membranes for anti-wetting performance in membrane distillation.DESALINATION,432,23-31.
MLA An, Xiaochan,et al."Amphiphobic surface modification of electrospun nanofibrous membranes for anti-wetting performance in membrane distillation".DESALINATION 432(2018):23-31.
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