Abstract
Chlorine-resistant membranes play a pivotal role in achieving high membrane durability and stable separation efficiency. Inspired by the high oxidative stability of esters, polyarylate nanofiltration (NF) membranes are fabricated using phthalazinone-containing bisphenol monomer, 2,4-(4-hydroxyphenyl)-2,3-phthalazin-1-one (BPPZ), and trimesoyl chloride on the porous substrate via interfacial polymerization. The polyarylate NF membrane exhibits good water flux (51.3 ± 0.9 L m−2 h−1) and Na2SO4 rejection (93.6 ± 1.6%), even after exposure to a harsh chlorine environment (200000 ppm h sodium hypochlorite solution). Membrane oxidative stability arose due to ester linkages and strong steric hindrance in the polymeric separative layer, with enhanced chlorine resistance than state-of-the-art chlorine-resistant modified NF membranes. Meanwhile, the polyarylate NF membrane exhibits excellent thermal resistance, achieving a steady operation at 95 °C. This study provides a promising NF membrane with great application potential for treating oxidant-rich water and high-temperature separations.
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.
