Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 3, Issue 12, Pages 3019-3023Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.5b01292
Keywords
Organic solvent nanofiltration (OSN); Hollow fiber membrane; Dual-layer; Polybenzimidazole; Polyimide; Cross-link
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Funding
- GlaxoSmithKline-Economic Development Board (GSK-EDB) Trust Fund [R-706-000-019-592]
- Singapore National Research Foundation [NRF2014NRF-CRP002-006]
- National Natural Science Foundation of China [21506094]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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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.
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