Amphiphobic surface modification of electrospun nanofibrous membranes for anti-wetting performance in membrane distillation

doi:10.1016/j.desal.2017.12.063

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 山东省海岸带环境工程技术研究中心

	Amphiphobic surface modification of electrospun nanofibrous membranes for anti-wetting performance in membrane distillation
	An, Xiaochan 1,3; Liu, Zhongyun 1; Hu, Yunxia2
刊名	DESALINATION
	2018-04-15
卷号	432 页码:23-31
关键词	Amphiphobic Surface Modification Membrane Distillation Anti-wetting Electrospinning Nanofibrous Membrane
ISSN号	0011-9164
DOI	10.1016/j.desal.2017.12.063
文献子类	Article
英文摘要	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.
WOS关键词	SUPEROLEOPHOBIC SURFACES ; SUPERAMPHIPHOBIC FABRICS ; WASTE-WATER ; ROBUST ; COATINGS ; DESALINATION ; POLYMER ; ENVIRONMENT ; TECHNOLOGY ; SEPARATION
WOS研究方向	Engineering ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000428103300003
资助机构	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)
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24026]
专题	烟台海岸带研究所_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
推荐引用方式 GB/T 7714	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.