Modification of a Poly(tetrafluoroethylene) Porous Membrane to Superhydrophilicity with Improved Durability. Issue 5 (12th March 2019)

• Record Type: Journal Article
• Authors: Liu, Shijie; Cui, Suping; Qin, Zhenping; Zhang, Xuehong; Zhao, Yao; Zhao, Yingying; Guo, Hongxia
• Is Part Of: Chemical engineering & technology. Volume 42:Issue 5(2019)
• Page Start: 1027
• Page End: 1036
• Publication Date: 2019-03-12
• Subjects: Filtration performance -- Fluorocarbon surfactant -- Hydrophilization -- Poly(tetrafluoroethylene) porous membrane -- Superhydrophilicity; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201800271
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: The commercial fluorocarbon surfactant (FCS) DuPont™ Zonyl 321 fluorinated cationic surfactants, was employed to modify both flat‐sheet and hollow‐fiber poly(tetrafluoroethylene) (PTFE) porous membranes. The variation of morphology, wettability, and hydrophilicity durability to acid and alkali as well as the filtration performance of both membranes were investigated. Such superhydrophilic membranes showed better wetting stability and higher resistance to acid and alkali solutions. Moreover, both membranes exhibited good filtration performance. Abstract : Hydrophobic flat‐sheet and hollow‐fiber poly(tetrafluoroethylene) membranes were modified by a commercial fluorocarbon surfactant to reach superhydrophilicity. The superhydrophilic membranes are characterized by enhanced wetting stability and resistance to acid and alkali solutions together with good filtration performance and antifouling property. A facile and effective route of modification is provided.