Abstract
Novel β-cyclodextrin (β-CD)/polyester thin film nanofiltration composite membranes were prepared via in situ interfacial polymerization of trimesoyl chloride (TMC) and triethanolamine (TEOA) in the presence of β-CD. The effects of the concentration and pendant group of β-CD on the separation, morphology and anti-fouling performance of NF composite membrane were investigated. The results show that introducing an appropriate amount of β-CD into membrane effectively improves the membrane performance. When the concentration of β-CD is 1.8% (w/v) in the aqueous phase, the water flux of NF composite membrane reaches a value which is almost two times that of the bare polyester membrane, while maintaining the rejection to Na2SO4 at a relative high level. The NF composite membrane exhibits a remarkable increase in the negative charge density and salt rejection by the incorporation of sulfated β-CD (sβ-CD) which possesses sulfonic acid groups as pendant groups instead of hydroxyls. Furthermore, the β-CD/polyester NF composite membrane also presents a significant enhancement in the anti-fouling performance. Therefore, β-CD can be considered as a potential additive to improve the property of nanofiltration composite membrane.
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.
