Fluorinated thin-film composite membranes for nonpolar organic solvent nanofiltration
AuthorsAlduraiei, Fadhilah H.
Pulido Ponce de Leon, Bruno Antonio
Nunes, Suzana Pereira
KAUST DepartmentChemical Science Program
Physical Science and Engineering (PSE) Division
Biological and Environmental Science and Engineering (BESE) Division
Environmental Science and Engineering Program
Chemical Engineering Program
Advanced Membranes and Porous Materials Research Center
Embargo End Date2023-09-01
Permanent link to this recordhttp://hdl.handle.net/10754/671929
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AbstractPolyamide (PA) is highly effective as a selective layer in case of nanofiltration (NF) membranes, mainly for filtering water and other polar solvents. The incorporation of fluorinated monomers in a polyamide network is a novel strategy for obtaining membranes with enhanced permeability in case of nonpolar solvents. In this study, PA thin-film composite membranes were prepared by interfacially reacting trimesoyl chloride (TMC) and 4,4ʹ-(hexafluoroisopropylidene)bis(benzoyl chloride) (HFBC) in an organic phase with 5-trifluoromethyl-1,3-phenylenediamine (TFMPD) in an aqueous phase in a single step. The resulting membrane obtained using HFBC exhibited a considerably increased nonpolar solvent flux and selectivity in the nanofiltration range. Thus, the hydrophobicity of the PA layer and its permeance are effectively enhanced because of the incorporation of the fluorinated monomer. Therefore, high-performance membranes can be obtained for nonpolar solvent separation in petroleum refineries and purification in the pharmaceutical industry.
CitationAlduraiei, F., Manchanda, P., Pulido, B., Szekely, G., & Nunes, S. P. (2021). Fluorinated thin-film composite membranes for nonpolar organic solvent nanofiltration. Separation and Purification Technology, 119777. doi:10.1016/j.seppur.2021.119777
SponsorsThe authors would like to thank Dr. Valentina Musteata and Abaynesh Yihdego Gebreyohannes for the contribution to TEM and SEM imaging, respectively. We appreciate the excellent support from the KAUST Core Laboratories, especially for recording the SS-NMR, XPS and AFM. This study was funded by the King Abdullah University of Science and Technology (KAUST). Fadhilah Alduraiei would like to thank Saudi Aramco for providing PhD scholarship.