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Fabrication and post-treatment of nanofibers-covered hollow fiber membranes for membrane distillation
Su, Chunlei1,2; Lu, Chun1,2; Cao, Hongbin1; Tang, Kexin1; Chang, Junjun1,2; Duan, Feng1; Ma, Xiaofeng1; Li, Yuping1,2
2018-09-15
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume562Pages:38-46
Abstract

Novel nanofibers-covered hollow fiber membrane (N-HFM), combining the advantages of both electrospun nanofibers film and hollow fiber membrane was fabricated via electrospinning with non-rotational collectors. The key parameters of electrospinning including positive voltage, negative voltage, polymer concentration and working distance were optimized to examine their effects on the morphology and structure of N-HFM. Meanwhile, a solvent vapor welding post-treatment was firstly applied to enhance the mechanical strength of hollow fiber membranes. The welding can improve the mechanical property and water repellency as well as maintain the high porosity, by fusing the nanofibers just at junctions. After a 40 min welding, the Young's modulus, strain at break and tensile strength of the welded N-HFM increased by 117%, 79% and 90% respectively, compared to the pristine N-HFM. Furthermore, the welded N-HFM was able to present a high flux of 13.2 Lm(-2) h(-1) and a stable salt rejection of over 99.9% during the 5 h of direct contact membrane distillation (DCMD) test, suggesting the competency of the welded N-HFM for MD applications.

KeywordHollow Fiber Membrane Nanofiber Electrospinning Membrane Distillation Desalination
DOI10.1016/j.memsci.2018.05.027
Language英语
WOS KeywordAir-gap Membrane ; Poly(Vinylidene Fluoride) ; Electrospun Membranes ; Composite Membrane ; In-vitro ; Polymer ; Desalination ; Water ; Performance ; Morphology
Funding ProjectNSFC (Natural Science Foundation of China)[21377130] ; NSFC (Natural Science Foundation of China)[51425405]
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
Funding OrganizationNSFC (Natural Science Foundation of China)
WOS IDWOS:000434289800005
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24734
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Yuping
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Su, Chunlei,Lu, Chun,Cao, Hongbin,et al. Fabrication and post-treatment of nanofibers-covered hollow fiber membranes for membrane distillation[J]. JOURNAL OF MEMBRANE SCIENCE,2018,562:38-46.
APA Su, Chunlei.,Lu, Chun.,Cao, Hongbin.,Tang, Kexin.,Chang, Junjun.,...&Li, Yuping.(2018).Fabrication and post-treatment of nanofibers-covered hollow fiber membranes for membrane distillation.JOURNAL OF MEMBRANE SCIENCE,562,38-46.
MLA Su, Chunlei,et al."Fabrication and post-treatment of nanofibers-covered hollow fiber membranes for membrane distillation".JOURNAL OF MEMBRANE SCIENCE 562(2018):38-46.
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