Thin-film composite tri-bore hollow fiber (TFC TbHF) membranes for isopropanol dehydration by pervaporation

Hua, Ding; Ong, Yew Kwang; Wang, Peng; Chung, Tai‐Shung

doi:10.1016/j.memsci.2014.07.059

Cited by 38 publications

(16 citation statements)

References 69 publications

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“…As a result, they have high fluxes and low separation factors. After the HPEI modification, both HFs show enhanced separation factors because HPEI not only seals parts of surface defects but also improves the hydrophilicity [27][28][29][30]. The HPEI modified PES HF still has a relatively low separation factor because the PES substrate is very porous and has almost no selectivity for IPA/water separation.…”

Section: Universal Applications Of the Hpei Mediated Aldehyde Modificmentioning

confidence: 99%

“…The HPEI pre-treatment would not only introduce abundant primary amino groups on the membrane surface for the subsequent aldehyde modification but also improve the overall hydrophilicity as well as effectively seal the membrane defects [27][28][29][30]. A covalent assembly of HPEI-glutaraldehyde multilayer on hydrolyzed polyacrylonitrile HF membranes had been fabricated by the layer-by-layer method for alcohol dehydration [31], but this method needed vacuum assistance during assembly and involved multiple steps including washing and drying after each assembly, which might incur additional costs and prolong production duration.…”

Section: Introductionmentioning

confidence: 99%

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Universal surface modification by aldehydes on polymeric membranes for isopropanol dehydration via pervaporation

Hua

Chung

2015

Journal of Membrane Science

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Section: Universal Applications Of the Hpei Mediated Aldehyde Modificmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Universal surface modification by aldehydes on polymeric membranes for isopropanol dehydration via pervaporation

Hua

Chung

2015

Journal of Membrane Science

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“…Hua et al [44] described the fabrication of a thin-film composite tri-bore hollow fiber (TFC TbHF) membranes for the application of IPA dehydration. By conducting interfacial polymerization on the HF substrates, TFC HF membranes were prepared using monomer MPD and another monomer TMC.…”

Section: Saline Water Treatmentmentioning

confidence: 99%

Thin Film Composite and/or Thin Film Nanocomposite Hollow Fiber Membrane for Water Treatment, Pervaporation and Gas/Vapor Separation

Khulbe

Matsuura

2018

Preprint

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Nowadays asymmetric thin film composite (TFC) polymeric hollow fiber (HF) membranes are extensively used in industrial gas/vapor separations, water treatment etc. There are numerous advantages to use hollow fibers such as: low energy requirements, simplicity of operation, and high specificity. In the present article we discuss the progress made during the past decade in the preparation of the HF substrate and preparation/modification of the thin selective layer. Their applications in water treatment, dehydration of alcohols via pervaporation and gas/vapor separation are also demonstrated.

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“…Besides, Ultem polyetherimide was chosen as the HF material because it not only owns good thermal stability and mechanical properties, but also exhibit satisfying separation performance for alcohol dehydration. [38][39][40] Therefore, our strategy is to combine the advantages of these two materials by dip-coating a Teflon AF2400 layer on top of the Ultem HFs.…”

Section: Introductionmentioning

confidence: 99%

Teflon AF2400/Ultem composite hollow fiber membranes for alcohol dehydration by high‐temperature vapor permeation

et al. 2016

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High-temperature vapor permeation has a stringent requirement of membrane stability under harsh feed environments. This work reports the design of Teflon AF2400/Ultem composite hollow fiber (HF) membranes for alcohol dehydration via vapor permeation. Fabrication parameters such as Teflon concentration and coating time were systematically investigated. Interestingly, the fabricated composite HF membranes possess an unusual surface with honeycomb-like microstructure patterns. Owing to the Teflon protective layer, the newly developed composite HF shows a promising and stable separation performance with a flux of 4265 gm 22 h 21 and a separation factor of 383 for 95% isopropanol dehydration at 1258C. The composite HF also performs well under extreme vapor feed compositions from 87 to 99 wt % isopropanol. In addition, it exhibits impressive separation performance for the dehydration of ethanol and n-butanol. This work may provide useful insights of designing thermal-stable and high-performance composite polymeric membranes for vapor permeation.

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Thin-film composite tri-bore hollow fiber (TFC TbHF) membranes for isopropanol dehydration by pervaporation

Cited by 38 publications

References 69 publications

Universal surface modification by aldehydes on polymeric membranes for isopropanol dehydration via pervaporation

Universal surface modification by aldehydes on polymeric membranes for isopropanol dehydration via pervaporation

Thin Film Composite and/or Thin Film Nanocomposite Hollow Fiber Membrane for Water Treatment, Pervaporation and Gas/Vapor Separation

Teflon AF2400/Ultem composite hollow fiber membranes for alcohol dehydration by high‐temperature vapor permeation

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