TY - JOUR
T1 - Fluorinated thin-film composite membranes for nonpolar organic solvent nanofiltration
AU - Alduraiei, Fadhilah H.
AU - Manchanda, Priyanka
AU - Pulido Ponce de Leon, Bruno Antonio
AU - Szekely, Gyorgy
AU - Nunes, Suzana Pereira
N1 - KAUST Repository Item: Exported on 2021-09-27
Acknowledgements: The 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.
PY - 2021/9
Y1 - 2021/9
N2 - Polyamide (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.
AB - Polyamide (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.
UR - http://hdl.handle.net/10754/671929
UR - https://linkinghub.elsevier.com/retrieve/pii/S1383586621014842
U2 - 10.1016/j.seppur.2021.119777
DO - 10.1016/j.seppur.2021.119777
M3 - Article
SN - 1383-5866
SP - 119777
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -