Abstract
A new kind of fluorinated polyamine was successfully synthesized and grafted onto the polyamide membrane surface to fabricate an antifouling nanofiltration membrane with low surface free energy. The surface composition of the fluorinated polyamide nanofiltration membrane was confirmed by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The membrane cross-section morphology was observed by a field emission scanning electron microscopy (FESEM). The presence of perfluoroalkyl groups on the membrane surface significantly lowered the surface free energy from 60.0 to 44.4mJ/m2. The filtration experiment results indicated that the surface fluorination did not lower the separation performance of the polyamide nanofiltration membrane significantly. The antifouling experiment results demonstrated that the fluorinated polyamide nanofiltration membranes exhibited superior antifouling property, that is, high flux recovery ratio (~98.5%) and low total flux decline ratio (~11%) during protein aqueous solution and humic acid aqueous solution filtration.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
