Fast formation of strong symmetric poly (vinylidene fluoride) membranes via a modified VIPS method

Ping-Hong Li,Konstantinos G. Beltsios,Jenn Fang Su,Liao-Ping Cheng

Journal of The Taiwan Institute of Chemical Engineers（2023）

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摘要

•Efficient formation of symmetric PVDF membranes by VIPS was developed.•Glycerol addition induces supersaturated dope and creates surface pores.•Vapor exposure of 1.5 min is sufficient to prepare high-flux membranes (1900 LMH).•Remarkable 99% PMMA rejection and 450 LMH permeation flux are achieved.

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关键词

PVDF,Vapor-induced phase separation,Skinless membrane,Bi-continuous structure,Filtration

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