Numerical simulation of a UV photografting process for hollow-fiber membranes

Goma-Bilongo, Tchicaya; Akbari, Ahmad; Clifton, Michaël; Rémigy, Jean-Christophe

doi:10.1016/j.memsci.2005.11.013

Cited by 17 publications

(15 citation statements)

References 9 publications

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“…One of them concerns the surface modification of an existing membrane; the other one is modifying the membrane using charged polyelectrolytes. The first approach permits the use of a preexisting, commercially available membrane or with a well-documented fabrication process [4][5]. The second one requires the development and control of a new modification process of a porous material, which can be difficult or even impossible to obtain by the classical phase inversion process due to polyelectrolytes solubility in water.…”

Section: Modification Of the Membrane Surfacementioning

confidence: 99%

Hybrid Catalytic Membranes: Tunable and Versatile Materials for Fine Chemistry Applications

Emin

Rémigy

et al. 2016

Materials Today: Proceedings

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The aim of this work is the synthesis of polymer-stabilized Pd nanoparticles inside a functionalized polymeric porous membrane and to test them in metal-catalyzed organic reactions. A polymeric membrane support (Polyethersulfone) was functionalized with an ionogen polymer capable of retaining metallic nanoparticles (MNP) or MNP precursors using a UV photo-grafting method. Membranes were also obtained by casting sulfonated polyethersulfone (Cardotype). The reactions were carried out by filtering solutions containing the reactants leading to full conversions within seconds. The amount of PdNP included in the materials and the catalytic activity were influenced by the properties of the grafted network.

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Section: Modification Of the Membrane Surfacementioning

confidence: 99%

Hybrid Catalytic Membranes: Tunable and Versatile Materials for Fine Chemistry Applications

Emin

Rémigy

et al. 2016

Materials Today: Proceedings

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“…Of course, the method could also be used to produce the PES hollow fiber membrane with small pore size. Goma-Bilongo and co-workers (Goma-Bilongo et al, 2006) developed a numerical model to represent the process by which hollow-fiber membranes could undergo continuous surface modification by UV photo-grafting, which was the same as reported by Bequet (Bequet et al, 2002). The model took into account the coupled effects of radiation, mass transfer with polymerization reaction and heat transfer with evaporation.…”

Section: Photo-induced Surface Graftingmentioning

confidence: 99%

Polyethersulfone Hollow Fiber Membranes for Hemodialysis

Su¹,

Sun²,

Zhao³

2011

Progress in Hemodialysis - From Emergent Biotechnology to Clinical Practice

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“…Often the focus of the coating procedure is set on the immersion time of membrane pieces in the coating solution rather than a defined pull‐out from the solution . In some studies with continuous coating devices the theoretical background of dip coating fibers is explained and calculated, but only rarely compared to experimental thicknesses . Clearly one challenge is the evaluation of the experimental coating thickness.…”

Section: Introductionmentioning

confidence: 99%

“…Intrusion of coating material into the membrane pores is discussed theoretically by Béquet et al . and Goma‐Bilongo et al . with Fick's second law.…”

Section: Introductionmentioning

confidence: 99%

Influence of surface properties on the dip coating behavior of hollow fiber membranes

Jesswein¹,

Uebele

Dieterich

et al. 2017

J of Applied Polymer Sci

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Coating processes have become an important fabrication step in membrane production, either to form a separation layer on a porous substrate or to tune specific properties. The coating procedure depends to a large extent on the membrane properties which substantially impedes a prediction of the coating thickness. To give an insight into the coating properties of various hollow fiber membranes, a selection of membranes with different pore sizes was coated with aqueous poly(vinyl alcohol) solutions at various coating velocities. It was found that material properties and pore sizes of the membranes have great influence on coating thicknesses. An intrusion of coating material into the membrane structure was determined with increasing pore size. Pure intrusion without formation of a dense surface layer took place when using a membrane with a mean pore size of ca. 500 nm. Coating results were correlated with the theoretical LLD law and for some membranes the coating thickness can be predicted quite well by the LLD law and its enhancements. When a significant amount of coating material penetrated into the membrane structure the LLD law loses its validity.

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Numerical simulation of a UV photografting process for hollow-fiber membranes

Cited by 17 publications

References 9 publications

Hybrid Catalytic Membranes: Tunable and Versatile Materials for Fine Chemistry Applications

Hybrid Catalytic Membranes: Tunable and Versatile Materials for Fine Chemistry Applications

Polyethersulfone Hollow Fiber Membranes for Hemodialysis

Influence of surface properties on the dip coating behavior of hollow fiber membranes

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