A novel polyester composite nanofiltration membrane prepared by interfacial polymerization catalysed by 4-Dimethylaminopyridine (cas 1122-58-3): Enhanced the water permeability and anti-fouling ability

Add time:09/26/2019    Source:sciencedirect.com

In this study, 4-dimethylaminopyridine (DMAP) was firstly used as a catalyst in the interfacial polymerization of pentaerythritol (PE) and trimesoyl chloride (TMC) to enhance membrane performance. A series of nanofiltration membranes were prepared using five different DMAP concentrations of 0%, 10%, 20%, 30% and 40% (mass percentage accounting for PE). The filtration test results demonstrated that the water permeability of the typical PE-4 (40% DMAP addition) was 3.47-fold higher than that of the PE-0 (no DMAP addition) with no significant salt rejection loss, indicating that DMAP could effectively improve the water permeability. Characterization by SEM, AFM, and ATR-FTIR indicated that DMAP facilitated the reaction of PE and TMC, which resulted in polyester forming on the surface of the substrate membrane, rather than blocking the membrane pore. Moreover, the PE-DMAP-TMC TFC membrane displayed excellent dye separation performance and high antifouling ability.

We also recommend Trading Suppliers and Manufacturers of 4-Dimethylaminopyridine (cas 1122-58-3). Pls Click Website Link as below: cas 1122-58-3 suppliers

Prev:Non-covalent bonded 2D–3D supramolecular architectures based on 4-Dimethylaminopyridine (cas 1122-58-3) and organic acids
Next:Preparation, spectroscopic and thermal characterization of charge-transfer molecular complexes formed in the reaction of 4-Dimethylaminopyridine (cas 1122-58-3) with π-electron acceptors)