Rapid fabrication of fluorinated covalent organic polymer membranes for organic solvent nanofiltration
Type
ArticleKAUST Department
Chemical Science ProgramPhysical Science and Engineering (PSE) Division
Advanced Membranes and Porous Materials Research Center
Biological and Environmental Science and Engineering (BESE) Division
Environmental Science and Engineering Program
Chemical Engineering Program
Date
2022-02Embargo End Date
2024-02-01Submitted Date
2021-12-19Permanent link to this record
http://hdl.handle.net/10754/675372
Metadata
Show full item recordAbstract
Covalent organic polymers (COPs) are prepared via the non-uniform covalent assembly of organic building blocks, endowing their structures with permanent pores, thereby rendering them suitable for diverse applications. The use of COPs in the fabrication of composite membranes can enhance their permeability, selectivity, and chemical stability. However, the existing COP synthesis processes are typically tedious, thus necessitating the development of rapid and simpler routes. We demonstrate an easily performed synthesis route for the rapid (less than 10 s) fabrication of COP-based composite membranes via interfacial polymerization. The membranes were directly prepared on a polyacrylonitrile substrate without transferring the COP layer onto a porous support. The hydrophobicity of the membranes was achieved by the integration of fluorine-rich groups along the polymer backbone. The obtained solvent-resistant composite membranes exhibited a toluene permeance of 11 L m$^{−2} $h$^{−1}$ bar$^{−1}$ and congo red (687 g mol$^{−1}$) rejection levels of more than 95%. The remarkable performance, crosslinked polymer structure, and manufacturing scalability of the fabricated thin films make them attractive as solvent-resistant nanofiltration membranes.Citation
Alduraiei, Kumar, S., Liu, J., Nunes, S. P., & Szekely, G. (2022). Rapid fabrication of fluorinated covalent organic polymer membranes for organic solvent nanofiltration. Journal of Membrane Science, 120345. https://doi.org/10.1016/j.memsci.2022.120345Sponsors
This study was funded by the King Abdullah University of Science and Technology (KAUST). We appreciate the support from the KAUST Core Laboratories for the SS-NMR, XPS, and AFM measurements. Fadhilah Alduraiei would like to thank Saudi Aramco for providing her PhD scholarship.Publisher
Elsevier BVJournal
Journal of Membrane ScienceAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S0376738822000928ae974a485f413a2113503eed53cd6c53
10.1016/j.memsci.2022.120345