Study on Hydrophilicity Modification of Polyvinylidene Fluoride Membrane

摘要

Polyvinylidene fluoride(PVDF) membrane was modified by low-temperature plasma polymerization with collagen at different temperatures.PVDF membrane's surface was grafted with collagen.The chemical changes at the modified surface were characterized by pure water flux,contact angle,surface graft rate of collagen and FTIR.The hydrophilicity of resulted PVDF membrane was improved.The contact angles decreases from 62.5° to 50.2°,the pure water flux increases from 70.4 L · m-2 · h-1 to 182 L · m-2 · h-1,and the graft rate is 7.32％ at the temperature of 35°C.The resulted PVDF membrane can be applied in biomedical membrane materials.