Characteristics of ultrafiltration membranes fabricated from polysulfone and polymer-grafted silica nanoparticles: Effects of the particle size and grafted polymer on the membrane performance

Silica nanoparticles with a controlled size in the range of 10–100 nm were synthesized and their surface was treated with various hydrophilic polymers to produce polysulfone /silica nanoparticles composite membranes which exhibited enhanced performance in the ultrafiltration process

H.J. Song

2014

Key concepts

Scholarcy highlights

  • Silica nanoparticles with a controlled size in the range of 10–100 nm were synthesized and their surface was treated with various hydrophilic polymers to produce polysulfone/silica nanoparticles composite membranes which exhibited enhanced performance in the ultrafiltration process
  • PSf composite membranes containing silica nanoparticles grafted with a hydrophilic polymer exhibited a much higher water flux than the PSf membrane
  • The amount of grafted polymer on the particles decreased with increasing particle size
  • The water flux of the membranes increased with decreasing particle size, regardless of the type of grafted polymer
  • The PSf/P(VP-AN)-g-silica membrane showed the best performance among the membranes examined when the particle content and size were fixed

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