Chemical Engineering & Technology, Vol.42, No.5, 1027-1036, 2019
Modification of a Poly(tetrafluoroethylene) Porous Membrane to Superhydrophilicity with Improved Durability
The commercial fluorocarbon surfactant (FCS) DuPont (TM) 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.
Keywords:Filtration performance;Fluorocarbon surfactant;Hydrophilization;Poly(tetrafluoroethylene) porous membrane;Superhydrophilicity