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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2014.24.3.240

Preparation of Hydrophobic Porous PVDF Membrane and Application for Membrane Distillation  

Min, Ji Hee (Econity co., Ltd., R&D Technology center)
Park, Min Soo (Econity co., Ltd., R&D Technology center)
Kim, Jinho (Econity co., Ltd., R&D Technology center)
Publication Information
Membrane Journal / v.24, no.3, 2014 , pp. 240-248 More about this Journal
Abstract
Porous PVDF hollow fiber membranes were prepared by hybrid process of TIPS(thermally induced phase separation) and stretching for membrane distillation. The tests were conducted to investigate that permeability of the membrane could be enhanced by reducing membrane wall thickness. During fiber spinning, dope discharge rate from nozzle was reduced and flow rate of bore fluid increased to make the wall thickness thinner. As dope discharge rate from nozzle was reduced and flow rate of bore fluid increased, the membrane wall thickness was reduced. As a result, air permeability, water permeability and vapor permeability of the membranes increased.
Keywords
Membrane distillation; PVDF hollow fiber membrane; wall thickness; vapor permeability;
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