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Dilute solvent welding: A quick and scalable approach for enhancing the mechanical properties and narrowing the pore size distribution of electrospun nanofibrous membrane
Su, Chunlei1,2; Lu, Chun1; Horseman, Thomas3; Cao, Hongbin1,2; Duan, Feng1; Li, Lei4; Li, Mingjie5; Li, Yuping1,2
2020-02-01
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume595Pages:8
AbstractMajor limitations to the practical use of nanofibrous membranes in water filtration are their weak mechanical properties and wide pore size distribution. This study describes a quick and scalable method to improve the mechanical properties and narrow the pore size distribution of nanofibrous membranes by welding the nanofibers at their junction points. The welding process involves a simple dilute solvent spraying step followed by heating, requiring only a few minutes. The polymer's solvent was diluted with a non-solvent to avoid excessive dissolution of the nanofibers. With that, the degree of welding can be controlled by the volume fraction of solvent, the heating temperature and heating temperature. Dilute solvent welding enhanced the mechanical properties of the nanofibrous membrane while slightly changed the fiber crystallinity and fiber size distribution. Furthermore, the membrane pore size distribution narrowed with welding while high porosity (similar to 80%) was retained. In membrane distillation (MD) experiments, the welded nanofibrous membrane exhibited more robust MD performance than the pristine nanofibrous membrane with only slight decreases of vapor flux. This technique can be applied universally to treat both nanofibrous flat sheet and tubular membranes made from soluble polymers with their corresponding diluted solvents.
KeywordNanofiber Strength Pore size distribution Welding Membrane distillation
DOI10.1016/j.memsci.2019.117548
Language英语
WOS KeywordTHIN-FILM COMPOSITE ; SUPERHYDROPHOBIC MEMBRANES ; OSMOSIS MEMBRANES ; FABRICATION ; DISTILLATION ; STRENGTH ; REINFORCEMENT ; SOLUBILITY ; FILTRATION ; SCAFFOLDS
Funding ProjectNational Key Research and Development Program of China[2016YFB0600501] ; China Scholarship Council[201804910753] ; 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 ; China Scholarship Council ; Natural Science Foundation of China
WOS IDWOS:000501804600023
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38462
Collection中国科学院过程工程研究所
Corresponding AuthorCao, Hongbin; Li, Yuping
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Vanderbilt Univ, Dept Chem & Biomol Engn, 221 Kirkland Hall, Nashville, TN 37235 USA
4.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
5.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Su, Chunlei,Lu, Chun,Horseman, Thomas,et al. Dilute solvent welding: A quick and scalable approach for enhancing the mechanical properties and narrowing the pore size distribution of electrospun nanofibrous membrane[J]. JOURNAL OF MEMBRANE SCIENCE,2020,595:8.
APA Su, Chunlei.,Lu, Chun.,Horseman, Thomas.,Cao, Hongbin.,Duan, Feng.,...&Li, Yuping.(2020).Dilute solvent welding: A quick and scalable approach for enhancing the mechanical properties and narrowing the pore size distribution of electrospun nanofibrous membrane.JOURNAL OF MEMBRANE SCIENCE,595,8.
MLA Su, Chunlei,et al."Dilute solvent welding: A quick and scalable approach for enhancing the mechanical properties and narrowing the pore size distribution of electrospun nanofibrous membrane".JOURNAL OF MEMBRANE SCIENCE 595(2020):8.
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