Study progress of poly(vinylidene fluoride)membrane
Qingrui Wang · Membrane science and technology/Membrane science and technology series · 2004
Factors affecting the structure and property of PVDF membrane have been generalized systemly.Difˉferent additives have different effects on membrane structure.Generally speaking,membranes with lowˉboiling point additives usually have sponge-like structure,those with inorganic salts and waterˉsoluble polymers may accelarate the diffusion of solvent and precipitant tend to form finger-like structure.Stronger the intensity of precipitant,higher the compatible force of precipitant and solvent,and more finger-like stucture formed.The practical ability can be promoted through modification of the membrane.