Design and Construction of Porous Structures in PVDF Membranes in Phase Separation Processes

Guo Lan Huan; Jian Li Liu; Qi Yun Du; Xiao Yu Hu

doi:10.4028/www.scientific.net/AMR.335-336.895

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 335-336Design and Construction of Porous Structures in...

Design and Construction of Porous Structures in PVDF Membranes in Phase Separation Processes

Abstract:

In this article, the morphologies of membranes formed by three different systems, i.e. favorable diluent/unfavorable diluent/PVDF system, water-soluble solvent/ unfavorable diluent/PVDF system, and favorable diluent/unfavorable diluent/water-soluble polymer/PVDF system, were characterized, and the relationship between porous membrane morphology and the components of favorable diluent/unfavorable diluent and water-soluble solvent/unfavorable diluent in the system was investigated. The transformation from mesopores to bicontinuous porous structures, from finger-shaped pores to bicontinuous porous structures was realized, and meanwhile PVDF microporous membranes with microfiber-shaped porous structures were manufactured.