Physico-chemical interpretation of the SRNF transport mechanism for solvents through dense silicone membranes

Vankelecom, Ivo F.J.; Smet, Koen De; Gevers, Lieven; Livingston, Andrew G.; Nair, Dinesh; Aerts, Sven; Kuypers, S.; Jacobs, Pierre

doi:10.1016/j.memsci.2003.11.007

Cited by 113 publications

(100 citation statements)

References 31 publications

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“…Using a radiation crosslinked PAN/PDMS composite membrane that incorporated a nominal 10 μm thick PDMS layer and solvents with a range of solubility parameter (δ) spanning 14-29 MPa 0.5 , the authors showed measurements of swelling for both pure solvents and solvent mixtures at pressures up to 2000 kPa. Some of these data were compared favourably (in terms of measurement standard deviation (SD)) with the more widely used method of Ho and Sirkar [2] where the weight difference between a dry and solvent impregnated polymer sample is determined; see [3][4][5] for applications of the technique and [6,7] for alternative swelling measurement techniques.…”

Section: Introductionmentioning

confidence: 99%

Solvent-induced swelling of membranes — Measurements and influence in nanofiltration

Tarleton

Robinson

Salman

2006

Journal of Membrane Science

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This paper describes improvements to an apparatus for in-situ determinations of swelling where a linear inductive probe and electronic column gauge with an overall resolution of 0.1 µm was used for measurements of seven variants of polyacrylonitrile (PAN)/polydimethylsiloxane (PDMS) composite nanofiltration membranes in a range of alkane, aromatic and alcohol solvents. The unswollen membranes incorporated PDMS layers between 1 and 10 μm nominal thickness and were manufactured with a radiation and/or thermal crosslinking step.The tested membranes exhibited a range of swelling dependent on the degree of crosslinking, the initial PDMS layer thickness and the type of solvent. With no applied pressure the PDMS layer on some radiation crosslinked membranes swelled as much as ~170% of the initial thickness whilst other membranes were restricted to a maximum swelling of ~80%. When a pressure up to 2000 kPa was applied to a membrane then swelling could be reduced to ~20% of the value obtained at zero applied pressure. By vertically stacking up to 3 membrane samples it was possible to determine the swelling of PDMS layers as thin as 1 μm, although higher imposed pressures rendered some results unreliable as the measurement resolution of the apparatus was approached. The results of the swelling experiments are contrasted with crossflow nanofiltration performance in terms of solvent flux and solute rejection.

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Section: Introductionmentioning

confidence: 99%

Solvent-induced swelling of membranes — Measurements and influence in nanofiltration

Tarleton

Robinson

Salman

2006

Journal of Membrane Science

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“…Stafie et al [8] used the method with specially prepared 'thick films' of polydimethylsiloxane (PDMS) and measured swelling approaching 205% for hexane-solute (oil or PIB) systems. Vankelecom et al [9] used 'slabs' of PDMS with t-butanol solvent to demonstrate 70% swelling in the unrestrained state, but only 29% swelling when a Cite paper as: Tarleton E.S., Robinson J.P., Smith S.J. and Na J. sample was clamped.…”

Section: Introductionmentioning

confidence: 99%

New experimental measurements of solvent induced swelling in nanofiltration membranes

Tarleton

Robinson

Smith

et al. 2005

Journal of Membrane Science

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“…24,125,128,129 Stamatialis et al 140 found a valid linear correlation between the solvent permeability and (membrane) swelling/(solvent) viscosity ratio. Vankelecom et al 141 also found similar results. Furthermore, Darvishmanesh et al 23,130 indicated that the transfer of solvent through porous SRNF membranes is mainly affected by the solvent viscosity.…”

Section: The Influencing Factors Of Solvent Transfer Through Polymerimentioning

confidence: 55%

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

et al. 2014

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When considering energy consumption and environmental issues, solvent-resistant nanofiltration (SRNF) based on polymeric materials emerges as a process for substituting conventional separation processes of organic solutions, such as distillation, which consume high amounts of energy. Because SRNF does not involve phase transition, this process can potentially decrease the energy consumption and solvent waste and increase the yield of active components. Such improvements could significantly benefit a number of fields, such as pharmaceutical manufacturing and catalysis recovery, among others. Therefore, SRNF has gained a lot of attention since the recent introduction of solvent-stable polymeric materials in the manufacture of nanofiltration membranes. The membrane materials and the membrane structures depending on the fabrication methods determine the separation performance of polymeric SRNF membranes. Therefore, this article gives a comprehensive overview of the current state-of-art technologies of generating membrane materials and corresponding fabrication methods for SRNF membranes made from polymeric materials expected to provide the most benefit. The transport mechanisms and the corresponding models of SRNF membranes in organic media are also reviewed to better understand the mass transfer process. Various SRNF applications, such as in pharmaceutical and catalyst, among others, are also discussed. Finally, the difficulties and future research directions to overcome the challenges faced by SRNF processes are proposed. C

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Physico-chemical interpretation of the SRNF transport mechanism for solvents through dense silicone membranes

Cited by 113 publications

References 31 publications

Solvent-induced swelling of membranes — Measurements and influence in nanofiltration

Solvent-induced swelling of membranes — Measurements and influence in nanofiltration

New experimental measurements of solvent induced swelling in nanofiltration membranes

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

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