Effect of polymer composition in PEEKWC/PVP blends on pervaporation separation of ethanol/cyclohexane mixture

▶ PVP could be used to control the structure of the blend PEEKWC/PVP membranes. ▶ PVP improves EtOH separation quality by increasing the membranes hydrophilicity. ▶ Adding PVP up to a certain amount increases flux and selectivity, simultaneously. ▶ PVP reduces the mechanical strength of membranes while improving their elasticity.