Composite capillary membrane for solvent resistant nanofiltration

Dutczak, S.M.; Luiten-Olieman, Mieke W.J.; Zwijnenberg, H.J.; Bolhuis-Versteeg, Lydia A.M.; Winnubst, Louis; Hempenius, Mark A.; Benes, Nieck E.; Weßling, Matthias; Stamatialis, Dimitrios

doi:10.1016/j.memsci.2011.01.058

Cited by 49 publications

(35 citation statements)

References 35 publications

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“…This study was performed with commercially available dense PDMS membranes to overcome possible interferences related to the use of composite membranes and above all, because of the possibility of polymer intrusion into the support material which may have restricted PDMS swelling and performances . This material was also expected to be highly reproducible and the supplier specifications suggested that it could be obtained by exactly the same synthesis process for all studied thicknesses.…”

Section: Methodsmentioning

confidence: 99%

Organic solvent nanofiltration with a Poly(dimethylsiloxane) membrane: Parameters affecting its sieving properties

Leitner

Harscoat–Schiavo

Kapel

et al. 2014

J of Applied Polymer Sci

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In this study, retention experiments were performed to characterize the variable sieving properties of a poly(dimethylsiloxane) (PDMS) membrane in relation with operating parameters. The swelling, transmembrane pressure, and temperature are all known to impact the physicochemical properties and morphology of PDMS polymer and were therefore varied for the purposes of our retention experiments which assessed them with the homologous series of polyethylene glycols (PEGs; 200-1500 g mol 21 ). The objectives were twofold-first, to evaluate the capacity to induce a targeted molecular weight cutoff (MWCO) by selecting appropriate filtration conditions and second to better understand the mechanisms involved during solvent-resistant nanofiltration with PDMS. The selected solvents or solvent/solvent mixtures used throughout this study were found to induce swelling ratios of 1.16 (ethanol/ethyl acetate: 25/75), 1.26 (ethyl acetate), 1.33 (ethyl acetate/toluene: 50/50), and 1.41 (toluene), respectively. Linear correlations were obtained between the MWCO and the swelling ratio induced by each solvent and between the MWCO and the transmembrane pressure. Pore size calculations using solvent flux and retention data confirmed the variable sieving properties of the PDMS membrane in relation to the solvent-induced swelling and applied transmembrane pressure. In addition, the study of the solutetransfer rate through several operating conditions showed that both diffusive and convective transports occurred for the PEG solutes and that their respective contributions appeared dependent on the variable pore size of the PDMS membrane.

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Section: Methodsmentioning

confidence: 99%

Organic solvent nanofiltration with a Poly(dimethylsiloxane) membrane: Parameters affecting its sieving properties

Leitner

Harscoat–Schiavo

Kapel

et al. 2014

J of Applied Polymer Sci

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“…3(a)) cover a wide range of MW and are able to give a comprehensive description of the membrane performance in the nanofiltration range. Oligostyrene molecules were used by See-Toh et al [41] and Dutczak et al [42] to characterise PI and PDMS membranes, respectively. The smallest species in the mixture is the α-methyl styrene dimer, which is shown in Fig.…”

Section: Modelmentioning

confidence: 99%

Predictive membrane transport models for Organic Solvent Nanofiltration: How complex do we need to be?

Marchetti

Livingston

2015

Journal of Membrane Science

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“…The substrate porosity of the floated samples is virtually equal to the uncoated PAN support itself. Thus the method presented here can also be reliably used to assess the degree of pore intrusion, which is a crucial parameter often limiting the composite membrane permeance 27 . Figure 5 shows the impact of the spin coating solution concentration on the PIM-6FDA-OH layer thickness and the remaining porosity within the PAN substrate.…”

Section: Resultsmentioning

confidence: 99%

In-situ non-invasive imaging of liquid-immersed thin film composite membranes

Ogieglo

Pinnau

Weßling

2018

Journal of Membrane Science

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We present a non-invasive method to directly image liquid-immersed thin film composite membranes. The approach allows accessing information not only on the lateral distribution of the coating thickness, including variations in its swelling and density, but also on the distribution of substrate porosity, roughness, accessibility of pores to liquid, and even the degree of pore intrusion related to the thin layer deposition process. The method can be particularly helpful in the fields of functional coatings or membranes to allow laterally-resolved studies under realistic application conditions thereby opening completely new research avenues. The approach is demonstrated in a study of two polymers of intrinsic microporosity, PIM-1 and PIM-6FDA-OH, coated on polyacrylonitrile support and immersed in water. Variations of the skin morphology using different coating methods (floating, spin-coating and dip-coating) are evaluated with the help of the presented method. Surfaces of at least tens of cm 2 can be potentially analyzed. 2/123/12 8/12

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Composite capillary membrane for solvent resistant nanofiltration

Cited by 49 publications

References 35 publications

Organic solvent nanofiltration with a Poly(dimethylsiloxane) membrane: Parameters affecting its sieving properties

Organic solvent nanofiltration with a Poly(dimethylsiloxane) membrane: Parameters affecting its sieving properties

Predictive membrane transport models for Organic Solvent Nanofiltration: How complex do we need to be?

In-situ non-invasive imaging of liquid-immersed thin film composite membranes

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