Polyamide-based membranes with structural homogeneity for ultrafast molecular sieving
Huazhong University of Science and Technology · Chung Yuan Christian University · +3 more institutions
Abstract
Thin-film composite membranes formed by conventional interfacial polymerization generally suffer from the depth heterogeneity of the polyamide layer, i.e., nonuniformly distributed free volume pores, leading to the inefficient permselectivity. Here, we demonstrate a facile and versatile approach to tune the nanoscale homogeneity of polyamide-based thin-film composite membranes via inorganic salt-mediated interfacial polymerization process. Molecular dynamics simulations and various characterization techniques elucidate in detail the underlying molecular mechanism by which the salt addition confines and regulates the diffusion of amine monomers to the water-oil interface and thus tunes the nanoscale homogeneity…
Citation impact
- FWCI
- 24.98
- Percentile
- 100%
- References
- 47
Authors
10- LSLiang ShenCorresponding
Huazhong University of Science and Technology
- RCRuihuan Cheng
Huazhong University of Science and Technology
- MYMing Yi
Huazhong University of Science and Technology
- WHWei‐Song Hung
Chung Yuan Christian University, National Taiwan University of Science and Technology
- SJSusilo Japip
National University of Singapore
Topics & keywords
- Polyamide
- Interfacial polymerization
- Membrane
- Materials science
- Nanofiltration
- Thin-film composite membrane
- Reverse osmosis
- Chemical engineering