Study on hydrophilic modification and properties of polytetrafluoroethylene membrane
The hydrophilic polytetrafluoroethylene(PTFE)membrane is prepared by the cover of 2-hydroxyethyl methacrylate phosphate(HEMAP)on the surface of PTFE membrane through UV curing.The results show that the hydrophilicity of PTFE membrane is improved with the increase of the amount of HEMAP,which indicate that the PTFE membrane after modification has an excellent surface wettability.With the increase of HEMAP amount,the pure water flux of PTFE membrane increases.When the amount of HEMAP increases further,the gaps between fibers in PTFE membranes are filled by HEMAP,which led to the decrease of pure water flux.In addition,Fe(Ⅲ)ions in the weak acidic medium are absorbed by the PTFE membrane after hydrophilic modification.The research results can provide some reference for the hydrophilic modification of PTFE membrane and its adsorption of heavy metal ions in acidic environments.
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