Facile Synthesis of Dual-Layer Organic Solvent Nanofiltration (OSN) Hollow Fiber Membranes

Shi Peng Sun*, Sui Yung Chan, Weihong Xing, Yong Wang, Tai Shung Chung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

98 Scopus citations


A dual-layer organic solvent nanofiltration (OSN) hollow fiber membrane was prepared by a single-step coextrusion process with polybenzimidazole as the outer selective layer and hyperbranched polyethylenimine cross-linked polyimide as the inner support layer. The OSN membrane shows a rejection of >99% against methylene blue (MW: 319.85 g mol-1) with good solvent fluxes in water, methanol, and acetonitrile. The newly invented fabrication technology may provide simple, cost-effective, scalable, and high-performance OSN membranes for organic solvent recovery.

Original languageEnglish (US)
Pages (from-to)3019-3023
Number of pages5
JournalACS Sustainable Chemistry and Engineering
Issue number12
StatePublished - Nov 11 2015


  • Cross-link
  • Dual-layer
  • Hollow fiber membrane
  • Organic solvent nanofiltration (OSN)
  • Polybenzimidazole
  • Polyimide

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Renewable Energy, Sustainability and the Environment


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