Indexed by:期刊论文
Date of Publication:2018-05-15
Journal:JOURNAL OF MEMBRANE SCIENCE
Included Journals:SCIE
Volume:554
Page Number:291-299
ISSN No.:0376-7388
Key Words:Homoporous membranes; Microfiltration; Mechanical strength; Breath figure method; Thermal adhesion
Abstract:Homoporous membranes are promising for size-sieving filtration, but their prospect is restricted by the lack in mechanical strength. A facile and low-cost route based on in situ breath figure and thermal adhesion method is proposed to fabricate the reinforced homoporous MF membranes in this research. The substrates specific to this route are fabricated by PVDF coating and then ice sealing on nonwoven fabrics. On the tailor-made substrates, the porous film is formed as usual by the breath figure method, and then immobilized on the substrate conveniently by PVDF melting. Acetone is introduced into the casting solution with intent to accelerate solution spreading on ice surface and facilitate micron-scale water droplets floating down to the solution film, so that the resistance layer could be formed thinner and abundant in perforated pores to attain high water permeation flux. Four usually used homoporous membrane materials, i.e., PSF, PES, PPO and PEI, have succeeded in membrane fabrication. FE-SEM images reveal that membrane pores are perforated and homogeneous with controllable size, again the homoporous layer is tightly adhered on substrate. Water permeation, particle sieving and regeneration tests indicate that the reinforced homoporous membranes made by this novel method are practicable for high-resolution separation under moderate pressure and long-time service.
Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Main positions:化工学院副院长
Other Post:Vice director of Engineering Laboratory of Liaoning Province
Gender:Male
Alma Mater:Tianjin University
Degree:Doctoral Degree
School/Department:School of Chemical Engineering
Discipline:Chemical Engineering. Membrane Science and Technology. Water Science and Technology
Business Address:大连理工大学西部校区化工实验楼D405
Contact Information:Tel:0411-84986291
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