In this research, polybutylene succinate (PBS) was utilized in the fabrication of pervapo-ration (PV) membranes, and novel PBS/polyvinylpyrrolidone (PVP) blend membranes wereprepared and assessed for the dehydration of acetone. The influence of PVP concentrationon membrane morphology, chemical structure, relative hydrophilicity/hydrophobicity, andmechanical properties was studied through field-emission scanning electron microscopy(FESEM), attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy,measurement of water contact angle, and tensile test, respectively. In addition, the ther-mal properties of the PBS and PBS/PVP membranes were compared via thermogravimetricanalysis (TGA). Finally, membrane swelling was determined, and the performance of theresultant PBS/PVP membranes in dehydration of acetone/water mixture was compared viathe determination of acetone and water fluxes, total flux, separation factor, and pervapo-ration separation index (PSI). The obtained results confirmed the increased hydrophilicity,swelling, and tensile strength of the PBS/PVP blend membranes compared to that of theneat PBS one. Moreover, blending PBS with PVP increased the total flux, separation factor,and PSI of the resultant membranes. Using 3 wt.% PVP in the polymeric solution augmentedthe mentioned parameters by about 3, 6, and 21 fold, respectively, compared to those of thepure PBS membrane.

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