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

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 &g...

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Bibliographic Details
Published in:ACS sustainable chemistry & engineering 2015-12, Vol.3 (12), p.3019-3023
Main Authors: Sun, Shi-Peng, Chan, Sui-Yung, Xing, Weihong, Wang, Yong, Chung, Tai-Shung
Format: Article
Language:English
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Summary: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.
ISSN:2168-0485
2168-0485
DOI:10.1021/acssuschemeng.5b01292