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Polyamide (PA) thin-film composite (TFC) membranes consisting of m-phenylenediamine (MPD) and trimesoylchloride (TMC) monomers have been widely used in desalination process for decades. Still, a rational design of PA TFC membranes by tailoring monomer species and concentration could further reduce the energy consumption in desalination process. In this study, we prepared PA TFC membranes using mixed amine monomer depends on the number of -NH₂group and investigated the desalination performance of prepared membranes. The crosslinking between amine and acyl chloride group was confirmed by infrared spectroscopy regardless of amine species. Surface morphologies which were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed increased surface roughness.
