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Effect of the concentration of (a) Pa, (b) Tp, and (c) CTAB on the separation performance of the TpPa/PI membrane using the fabrication of (a) Tp, concentration: 0.070 wt%, and CTAB, concentration: 0.005 wt%, (b) Pa, concentration: 0.6 wt%, and CTAB, concentration: 0.005 wt%, (c) Pa, concentration: 0.6 wt%, and Tp concentration: 0.055 wt%. Other conditions included IP time: 40 s, heat treatment time: 5 min, and solvent activation time: 15 min.
