Research Progress in PVDF Ultrafiltration Membranes Prepared by Phase Inversion Method and Its Hydrophilic Modifications
Lu Da-shan · China Plastics Industry · 2011
The newly research progress of polyvinylidene fluoride(PVDF)ultrafiltration membrane in preparation and hydrophilic modification was reviewed.The effects of concentration of polymer,selection of solvents,varieties and contents of addition agents,coagulation bath composition and temperature on morphology and property of PVDF ultrafiltration membrane which was made by phase inversion were showed.The modification methods of PVDF ultrafiltration membranes including physical blending and copolymerization,radiation induced grafting and low-temperature plasma were introduced.The mechanisms,characteristics and the latest research progress of these methods were mentioned.It was evident that physical blending modification was the trend in the hydrophilic modification. Key wodrs: PVDF;UF Membrane;Preparation;Hydrophilic Modification