Fabrication of superhydrophilic poly(styrene-alt-maleic anhydride)/silica hybrid surfaces on poly(vinylidene fluoride) membranes

► PVDF/poly(styrene-alt-maleic anhydride) (SMA) blend membrane was prepared. ► Superhydrophilicity hybrid surface was gained on the membrane at room temperature. ► The hybrid surface was gained by reacting SMA and aminopropyltriethoxysilane. ► The hybrid surface possessed micro-nano hierarchically structure. ► The choice of aminopropyltriethoxysilane solvent is important.