Interconnection of electrospun nanofibers via a post co-solvent treatment and its open pore size effect on pressure-retarded osmosis performance

Chul Ho Park, Harim Bae, Sung Jo Kwak, Moon Seok Jang, Jung-hyun Lee, Jonghwi Lee

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Design of support layer structures for asymmetric thin film composite membranes has drawn keen attention to improve the power density for salinity gradient power based on pressure-retarded osmosis. This study has interests on electrospun nanofiber-based support layers, and the effects of its open pore sizes are attractively stated. To control the open pore size, a counter charge deposition method was introduced. To retain the open pore size, all the nanofibers were interconnected by a post co-solvent treatment technology. For a thin film composite membrane, an interfacial polymerization was used to fabricate a polyamide active layer on the electrospun nanofiber-based support layers. It was found that although the maximum power density achieved with an open pore size of 2.4 μm2 was 0.14 W/m2, it increased significantly up to 9.5 W/m2 when the pore size was reduced to 0.65 μm2. The cause is the salt flux which increases with increasing the open pore sizes under applied pressures. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)314-322
Number of pages9
JournalMacromolecular Research
Volume24
Issue number4
DOIs
Publication statusPublished - 2016 Apr 1

Keywords

  • electrospinning
  • nanofiber support layer
  • open pore size
  • pressure-retarded osmosis
  • salt flux

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Chemical Engineering(all)

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