The effect of blending ratio on the compatibility, morphology, thermal behavior and pure water permeation of asymmetric CAP/PVDF membranes

► An asymmetric blend membrane was fabricated using the phase inversion method. ► Blending semi-crystalline PVDF can alter the thermal property of CA membrane. ► At low blending ratio, a liquid-liquid demixing governed the precipitation process. ► At high blending ratios, crystallization dominated and resulted in low water flux.