Tailored adhesion behavior of polyelectrolyte thin films deposited on plasma-treated poly(dimethylsiloxane) for functionalized membranes

Bassil, Joëlle; Alem, Halima; Henrion, G.; Roizard, Denis

doi:10.1016/j.apsusc.2016.01.146

Cited by 6 publications

(12 citation statements)

References 32 publications

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“…For the activation by oxygen plasma (i), the PDMS plate was placed inside a Harrick Plasma Cleaner (Ithaca, NY, USA) during 2 min at full power under a vacuum of about 80 Pa. The oxygen plasma had the 8 effect of creating silanol, carboxylic and carbonyle groups at the surface of PDMS which are able to interact with the polycation backbone groups [20,23,24,33]. For the activation with a piranha solution (ii), the PDMS plate was dipped into the piranha solution for 30 min.…”

Section: Surface Modifications Of Flat Surfacesmentioning

confidence: 99%

“…Nevertheless, PDMS remains the most widely used material in microfluidics owing to its flexibility and transparency in UV-Visible spectrum range. This material is hydrophobic by nature and the way to render it hydrophilic in long term is challenging, as the elastomeric property of the PDMS induces its surface recovery, hence, its hydrophobicity [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Polyelectrolytes layer-by-layer surface modification of PDMS microchips for the production of simple O/W and double W/O/W emulsions: From global to localized treatment

Stauffer

Péter

Alem

et al. 2019

Chemical Engineering and Processing - Process Intensification

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Section: Surface Modifications Of Flat Surfacesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polyelectrolytes layer-by-layer surface modification of PDMS microchips for the production of simple O/W and double W/O/W emulsions: From global to localized treatment

Stauffer

Péter

Alem

et al. 2019

Chemical Engineering and Processing - Process Intensification

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“…1, the plasma treatment was carried out using an Ar-O 2 (10:1) plasma created in a 5 mm (id) quartz tube with a 2.45 GHz microwave generator. This microwave power was optimized for effective surface membrane modification at 80 W [38]. All modifications were conducted at 4 mbar.…”

Section: Plasma Treatmentmentioning

confidence: 99%

“…For better adhesion between the dense membrane and polyelectrolytes, an effective method that can be applied is the plasma treatment (e.g., O 2 and Ar) of the pristine membrane surface to create negative charges. Films based on plasma-treated polydimethylsiloxane (PDMS) have been further functionalized by the LbL deposition of more than 5 bilayers of poly (diallyldimethyl ammonium chloride) (PDADMAC) and poly(styrene sulfonate) (PSS) [38]. The optimal plasma treatment conditions for the films were chosen to obtain a full surface coating, resulting in defect-free and hydrophilic PDMS surfaces, as confirmed by SEM images and contact angle measurements This work aimed at improving the transport properties of PVA membranes for the dehydration of isopropanol by using two complementary strategies: bulk and surface modifications.…”

Section: Introductionmentioning

confidence: 99%

Investigation of new modification strategies for PVA membranes to improve their dehydration properties by pervaporation

Dmitrenko

Penkova

Kuzminova

et al. 2018

Applied Surface Science

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Novel supported membranes based on polyvinyl alcohol (PVA) were developed using two strategies: first, by the modification of the PVA network, via so-called bulk modification, with the formation of the selective layer accomplished through the introduction of fullerenol and/or poly(allylamine hydrochloride), and second, by the functionalization of the surface with successive depositions of multilayered films of polyelectrolytes, such as poly(allylamine hydrochloride) and poly(sodium 4-styrenesulfonate) on the PVA surface. The membrane surface modifications were characterized by scanning electron microscopy and contact angle measurements. The modified PVA membranes were examined for their dehydration transport properties by the pervaporation of isopropyl alcohol-water (80/20% w/w), which was chosen as a model mixture. Compared with the pristine PVA membrane, the main improvement was a marked increase in permeance. It was found that the surface modifications mainly gave rise to a higher global flux but with a strong reduction in selectivity. Only the combination of both bulk and surface modifications with PEL could significantly increase the flux with a high water content in the permeate (over 98%). Lastly, it should be noted that this study developed a green procedure to prepare innovative membrane layers for dehydration, making use of only water as a working medium.

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“…It has been shown that a good alternative to avoid new material synthesis and development is to alter the membrane surface to tailor the interactions between the membrane and the solvent and/or solute [7][8][9]. The past decades have, therefore, witnessed the growth of surface functionalization processes such as plasma treatment [10], UV light treatment [11], and covalent and supramolecular grafting of macromolecules [7,12,13]. The layer-by-layer assembly (LBL) of polyelectrolytes (PELs) is one of the most promising processes owing to its versatility and the fact that it can be conducted under environment-friendly conditions, both for aqueous and organic nanofiltration.…”

Section: Introductionmentioning

confidence: 99%

PDMS membranes modified by polyelectrolyte multilayer deposition to improve OSN separation of diluted solutes in toluene

Morshed

Zimmer

Broch

et al. 2020

Separation and Purification Technology

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New functionalized poly(dimethylsiloxane) (PDMS) membranes were prepared by the surface modification of the commercially available PERVAP4060 membrane (Sulzer™) through cold plasma activation followed by the layer-by-layer assembly method. Four different pairs of polyelectrolytes, i.e., poly(allylamine hydrochloride) (PAH)/poly(acrylic acid) (PAA), PAH/poly(sodium 4-styrene sulfonate) (PSS), poly(diallyldimethylammonium chloride) (PDDA)/PAA, and PDDA/PSS, were used to coat the PDMS layer by the controlled deposition of successive nanolayers (20-50 nm).PERVAP4060 was systematically modified by the deposition of 10 bilayers of polyelectrolyte pairs. These membranes were characterized by contact angle measurements, scanning electron microscopy (SEM), ellipsometry, and atomic force microscopy (AFM). The nanofiltration membrane performance for the rejection of four diluted solutes-two soluble catalysts 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (R-BI-NAP) and tetraoctylammonium bromide (ToABr) and two linear aliphatic molecules n-Tetratetracontane (C 44 H 90 or C44) and n-Hexadecane (C 16 H 34 or C16)-was studied in the toluene feed solution at up to 40 bar pressure. It was shown that the organic solvent nanofiltration (OSN) mass transfer properties differ clearly depended on the layer-by-layer chemical structure and the characteristics of the solutes. Thus, the intrinsic permeance of toluene in the PEL multilayers were calculated by applying resistance-in-series model. Despite the highly diluted concentrations of the solutes, i.e., <1 wt% for R-BINAP and ToABr, and the high solvent permeate flux, the ToABr, R-BI-NAP, and C44 solutes were markedly rejected by all the membranes. ToABr had the highest rejection coefficient, up to 97%. As a trend, higher the polarity of the bilayer assembly, lower was the mass transfer of the solvent compared to that of the pristine membrane. The results indicated that a solution-diffusion mechanism is likely to apply. The best rejection of R-BINAP (up to 88%) was obtained when the membrane was coated with 10 bilayers of PAH/PSS. Thus, these prepared polyelectrolyte (PEL)-modified membranes have potential applications in homogeneous catalysis industry, for example in olefin metathesis for expanding the lifetime of soluble catalysts by separating them at mild OSN condition while ensuring the permeation of products.

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Tailored adhesion behavior of polyelectrolyte thin films deposited on plasma-treated poly(dimethylsiloxane) for functionalized membranes

Cited by 6 publications

References 32 publications

Polyelectrolytes layer-by-layer surface modification of PDMS microchips for the production of simple O/W and double W/O/W emulsions: From global to localized treatment

Polyelectrolytes layer-by-layer surface modification of PDMS microchips for the production of simple O/W and double W/O/W emulsions: From global to localized treatment

Investigation of new modification strategies for PVA membranes to improve their dehydration properties by pervaporation

PDMS membranes modified by polyelectrolyte multilayer deposition to improve OSN separation of diluted solutes in toluene

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