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Novel PTFE hollow fiber membrane fabricated by emulsion electrospinning and sintering for membrane distillation
Su, Chunlei1,2; Li, Yuping1,2; Cao, Hongbin1,2; Lu, Chun1,2; Li, Yujiao1,2; Chang, Junjun1,2; Duan, Feng1
2019-08-01
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume583Pages:200-208
Abstract

Polytetrafluoroethylene (PTFE) is an attractive membrane material due to its superior chemical resistance, thermal stability and strong hydrophobicity. However, PTFE hollow fiber membranes are challenging to produce by conventional technique due to the high solvent resistance and high melt viscosity of PTFE. In this study, novel PTFE hollow fiber membranes composed of pure PTFE nanofibers were firstly fabricated via a scalable and environment-friendly method based on emulsion electrospinning with a non-rotating collector and followed by a high-temperature sintering process. The effects of PTFE/PEO mass ratio and sintering temperature on the morphologies and properties of the resulting membranes were investigated. The prepared PTFE hollow fiber membrane shows the excellent characteristics combining the advantages of both electrospun nanofibers membrane and hollow fiber membrane, such as high porosity (more than 82%), self-supporting and superhydrophobicity. The membrane sintered at 380 degrees C present the highest mechanical strength, which shows the tensile strength, Young's modulus, strain at break of 30.5 Mpa, 53 Mpa, and 315%, respectively. The permeate flux of the prepared PTFE hollow fiber membrane is about 4.6-8.8 times as that of the commercial PTFE hollow fiber membranes, as well as is approximately 3.2-11.6 times higher than the date of the reported PTFE hollow fiber membranes. Additionally, the prepared membrane shows high and stable flux in long-term and rising salinity experiments, indicating it is very promising for membrane distillation (MD) application and even for the treatment of hyper-saline wastewater.

KeywordPtfe Hollow Fiber Membrane Nanofiber Electrospinning Membrane Distillation
DOI10.1016/j.memsci.2019.04.037
Language英语
WOS KeywordSuperhydrophobic Membranes ; Nanofiber Membranes ; Vapor Transport ; Surface-energy ; Desalination ; Performance ; Resistance ; Progress
Funding ProjectNational Key Research and Development Program of China[2016YFB0600501] ; Natural Science Foundation of China[51425405] ; Natural Science Foundation of China[21377130]
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
Funding OrganizationNational Key Research and Development Program of China ; Natural Science Foundation of China
WOS IDWOS:000467698000021
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28132
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Yuping
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Beijing Engn Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Su, Chunlei,Li, Yuping,Cao, Hongbin,et al. Novel PTFE hollow fiber membrane fabricated by emulsion electrospinning and sintering for membrane distillation[J]. JOURNAL OF MEMBRANE SCIENCE,2019,583:200-208.
APA Su, Chunlei.,Li, Yuping.,Cao, Hongbin.,Lu, Chun.,Li, Yujiao.,...&Duan, Feng.(2019).Novel PTFE hollow fiber membrane fabricated by emulsion electrospinning and sintering for membrane distillation.JOURNAL OF MEMBRANE SCIENCE,583,200-208.
MLA Su, Chunlei,et al."Novel PTFE hollow fiber membrane fabricated by emulsion electrospinning and sintering for membrane distillation".JOURNAL OF MEMBRANE SCIENCE 583(2019):200-208.
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