首页|Synthesis of fluorine-containing conjugated microporous polymers and their application for highly efficient oil/water separation
Synthesis of fluorine-containing conjugated microporous polymers and their application for highly efficient oil/water separation
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NSTL
Two fluorine-containing conjugated microporous polymers(CMP-F)have been synthesized by Sonogashira coupling polymerization.The CMP-F powders show high yield,high porosity,high thermal stability,and high water contact angles up to 128°.Due to its high hydrophobicity,the CMP-F polymers are used as fillers for fabricating oil/water separation mixed-matrix membranes(MMMs).CMP-F/PI MMMs were prepared by the electrospinning method with polyimide as the matrix for the first time.The CMP-F/PI MMMs exhibited a high separation efficiency of at least 99.5% for all the tested oils,such as toluene,ethyl acetate,hexane,CCl4 and gasoline,against water.The maximum flux of hexane reached to 13500 L/(m~2·h),and the stability of the separation efficiency was maintained at approximately 99.5% for fifteen cycles.Surprisingly,the MMMs displayed highly-efficient diesel/water separation properties with separation efficiencies of up to 99.7%,although it is well known that it is difficult to efficiently separate diesel from water owing to its complex composition and high viscosity.In addition,a water-in-toluene emulsion could be separated by CMP-F/PI MMMs with a separation efficiency of up to 99.1%.CMP-F/PI MMMs have high potential for application in emulsion separation.
NSTL
