Gas and water liquid transport through nanoporous block copolymer membranes

William A. Phillip, Javid Rzayev, Marc A. Hillmyer, E. L. Cussler

Research output: Contribution to journalArticle

100 Scopus citations

Abstract

ABC triblock terpolymers containing polylactide, poly(dimethylacrylamide) and polystyrene, which can self-assemble as aligned cylinders, are etched to give nanoscopic pores. The diffusion of gases through these pores is quantitatively consistent with Knudsen diffusion. The flow of water liquid in the pores is consistent with the Hagen-Poiseuille law. If these polymers can be produced as commercial ultrafiltration membranes, they should give a larger hydraulic permeability and a sharper molecular weight cut-off.

Original languageEnglish (US)
Pages (from-to)144-152
Number of pages9
JournalJournal of Membrane Science
Volume286
Issue number1-2
DOIs
StatePublished - Dec 15 2006

Keywords

  • Block copolymers
  • Gas diffusion
  • Nanopore

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