Baicang Liu - Low-cost antifouling PVC ultrafiltration membrane fabrication with Pluronic F 127: Effect of additives on properties and performance.

Document created by Baicang Liu on Aug 22, 2014
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  Publication Details (including relevant citation   information):

  Desalination. 2012,307, 26-33.


  To fabricate low-cost hydrophilic and antifouling ultrafiltration   membranes, in this work, we tuned the membrane

  surface hydrophilicity and porosity by adding different amounts   of the amphiphilic copolymer

  (Pluronic F 127) into polyvinyl chloride (PVC) casting solution.   The modified PVC membrane characteristics

  including oxygen content, morphology and pore size, surface   roughness, hydrophilicity, and permeability

  were characterized using X-ray photoelectron spectroscopy (XPS),   scanning electron microscopy (SEM),

  atomic force microscopy (AFM), contact angle measurement, and   flux measurements. With the increase of

  Pluronic F 127 content from 0 to 10 wt.%, the oxygen content on   the membrane surface increased and then

  reached an asymptote when 8 wt.% or greater Pluronic F 127 was   used; the pore size and the pore density

  both decreased; the membrane surface became more hydrophilic as   indicated by the decreasing contact angles;

  and the flux declined by 30% when Pluronic F 127 reached 10 wt.%.   Overall, the modified PVC membrane

  exhibited excellent antifouling feature even with Pluronic F 127   as low as 2 wt.%. Due to the membrane flux

  decline at 10 wt.% Pluronic F 127, the optimal addition of   Pluronic F 127 was 8 wt.%, which maintained the

  antifouling feature and high flux.


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