The influence of surface treatment and activation of thin film composite membranes with plasma discharge and determination of their physicochemical properties

Slepička, Petr; Setničková, Kateřina; Petrusová, Zuzana; Kasálková, Nikola Slepičková; Kolská, Zdeňka; Siegel, Jakub; Jansen, Johannes C.; Esposito, Elisa; Fuoco, Alessio; Švorčı́k, Václav; Izák, Pavel

doi:10.1016/j.seppur.2019.03.050

Cited by 10 publications

(2 citation statements)

References 48 publications

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“…The plasma treatment improved the wettability of the surface, reducing the contact angle with water for both materials, around 50% for PVDF and 65% for PES right after exposure to plasma (Figure 2, d0). Studies reporting the use of DC corona plasma treatment on the surface of composite reverse osmosis, 31 PES, 32 and PAN 30 membranes showed a decrease of 80, 99 and 86%, respectively, of the water contact angles just after plasma treatment, resulting in an improvement in the hydrophilicity of the membranes surface.…”

Section: Chemical and Physical Characteristics Of The Membranesmentioning

confidence: 98%

Simple approach for the plasma treatment of polymeric membranes and investigation of the aging effect

Marques

Silveira

Leite

et al. 2021

J of Applied Polymer Sci

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The modification of the surface characteristics after treatment with plasma in polymeric materials, such as the aging phenomenon, calls the attention of research in the area of nonthermal plasma technology. In this work, a direct treatment with dielectric-barrier discharge plasma was used on the surfaces of ultrafiltration membranes. The measurements of the contact angle with water, attenuated total reflectance accessory, zeta potential, atomic force microscopy and scanning electron microscopy-MEV were performed on the surfaces to verify changes after plasma treatment and to understand the occurrence and timing of the plasma aging effect. In the analysis of the membrane performance, hydraulic permeation and protein retention tests were performed. The results showed an improvement in wettability and hydrophilic properties in the post-treated membranes. The study of reversibility/aging of the postplasma surface is important for research that deals with the modification of polymeric membranes. Changes in surface morphology, topography and wettability of the membranes were observed up to seven days after treatment, with a tendency to return to the initial characteristics of the membranes.

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Section: Chemical and Physical Characteristics Of The Membranesmentioning

confidence: 98%

Simple approach for the plasma treatment of polymeric membranes and investigation of the aging effect

Marques

Silveira

Leite

et al. 2021

J of Applied Polymer Sci

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“…To generate the plasma, there is a gas discharge that can be carried out by direct current, alternating current as radio-frequency or microwave. These plasma sources have many applications used in deposition of thin and thick films, materials treatment including surface modifications, light sources, semiconductor processing and treatment of waste [3][4][5][6][7][8][9][10]. The plasma can be classified into low and high temperature, where the low temperature, cold plasma, is divided into two types that are low and atmospheric pressures [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Simulator of Planar Electrodes Plasma Characteristics using Different Gases

Torab¹,

Saleh

El‐Khabeary³

et al. 2020

Egypt. J. Physics

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S IMULATOR Plasma Source for Planar Electrodes, SPSPE, was designed to verify the experimental results of planar anode and cathode which were obtained previously using nitrogen gas. Experimentally, the glow discharge was carried out at operating pressure values in the range of 0.1 -0.6 Torr and the distance between the disc anode -disc cathode distance equal to 10 cm using nitrogen gas. The comparison between SPSPE and the experimental values at different product of pressure and distance values for breakdown voltage, discharge current and the second Townsend coefficient using nitrogen gas was made. It was found a good match between SPSPE and the experimental values. Also, the first Townsend coefficient was calculated by SPSPE at different product of pressure and distance values using nitrogen gas, while breakdown voltage and discharge current were calculated by SPSPE at different product of pressure and distance values using nitrogen, argon and carbon dioxide gases. It was found that the minimum breakdown voltage values equal to 472.77, 232.26 and 349.27 volts at minimum product of pressure and distance values equal to 1.5, 1 and 0.75 Torr.cm using nitrogen, argon and carbon dioxide gases, respectively. Also, it was found that the minimum discharge current values equal to 0.5228 mA and 3.65 mA at minimum product of pressure and distance value equal to 1 Torr. cmusing nitrogen and argon gases, respectively. While minimum discharge current value equal to 7.8 mA was obtained at minimum product of pressure and distance value equal to 0.75 Torr.cm using carbon dioxide gas.

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Morphological, chemical and electrical characterization of a family of commercial nanofiltration polyvinyl alcohol coated polypiperazineamide membranes

Otero-Fernández

Diaz

Otero

et al. 2020

European Polymer Journal

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Three AFC membranes from PCI, of the thin film composite (TFC) nanofiltration type, have been characterized by using XPS, AFM, Contact angles, Zeta potential and permeation experiments. This plethora of complimentary methods portrays a deep and exhaustive description of these membranes.Morphological properties, including porosity, water permeability, fractal dimension, Wenzel parameter and roughness, correlate well with pore sizes. While functional characteristics as, for example wettability correlate well with the O/N ratio. Increasing O/N ratios should be interpreted as caused by increasing PVA coverages.The charge on the membrane's surface is ordered in a different way for different pH but are quite similar anyway. The effect of charges on retention of 1:1, 1:2 and 2:1 salts (as tested with: NaCl, Na2SO4 and CaCl2) increases with increasing O/N and wettability. Consequently, the trend of salt retentions can be explained in terms of the PVA coverage and the details of the amphoteric behavior of the three AFC membranes studied.

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The influence of surface treatment and activation of thin film composite membranes with plasma discharge and determination of their physicochemical properties

Cited by 10 publications

References 48 publications

Simple approach for the plasma treatment of polymeric membranes and investigation of the aging effect

Simple approach for the plasma treatment of polymeric membranes and investigation of the aging effect

Simulator of Planar Electrodes Plasma Characteristics using Different Gases

Morphological, chemical and electrical characterization of a family of commercial nanofiltration polyvinyl alcohol coated polypiperazineamide membranes

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