Effect of argon plasma treatment on hydrophilic stability of nanofiber webs

Yalçinkaya, Fatma

doi:10.1002/app.46751

Cited by 13 publications

(12 citation statements)

References 84 publications

(126 reference statements)

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“…Unlike the PVDF membranes, the lamination conditions at given range did not change the wettability of the membranes. The previous work showed that neat PAN nanofiber has a contact angle around 70° under the lamination condition at a temperature of 135 °C and 50 kN pressure for 3 min . That might be the melted effect of adhesive web and the changing of the PAN structure under high temperature.…”

Section: Resultsmentioning

confidence: 96%

“…For this reason, a surface modification is required for the increase of the electrospun PAN membrane wettability. Previous works showed that the hydrophilic surface modification of electrospun PAN membrane with plasma treatment was not long lasting while additional chemical modification provided permeant wettability ,…”

Section: Resultsmentioning

confidence: 98%

“…The previous work showed that neat PAN nanofiber has a contact angle around 70°under the lamination condition at a temperature of 135°C and 50 kN pressure for 3 min. [40] That might be the melted effect of adhesive web and the changing of the PAN structure under high temperature. In general, it is known that hydrophobic membranes tend to foul easier than hydrophilic ones.…”

Section: Surface Characterizationmentioning

confidence: 99%

“…Previous works showed that the hydrophilic surface modification of electrospun PAN membrane with plasma treatment was not long lasting while additional chemical modification provided permeant wettability. [40,41] Membrane pore size is an important criterion for the selectivity and the permeability of the membrane. Pore size, size distribution, and porosity are parameters that directly influence the air permeability of the nanofiber web.…”

Section: Surface Characterizationmentioning

confidence: 99%

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Electrospun Polyacrylonitrile Nanofibrous Membranes for Point‐of‐Use Water and Air Cleaning

Roche

Yalçinkaya

2019

ChemistryOpen

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Novel electrospun polyacrylonitrile (PAN) nanofibrous membranes were prepared by using heat‐press lamination under various conditions. The air permeability and the burst‐pressure tests were run to select the membranes for point‐of‐use air and water cleaning. Membrane characterization was performed by using scanning electron microscopy, contact angle, and average pore size measurements. Selected membranes were used for both air dust filtration and cross‐flow water filtration tests. Air dust filter results indicated that electrospun PAN nanofibrous membranes showed very high air‐dust filtration efficiency of more than 99.99 % in between PM0.3 and PM2.5, whereas cross‐flow filtration test showed very high water permeability over 600 L/(m2hbar) after 6 h of operation. Combining their excellent efficiency and water permeability, these membranes offer an ideal solution to filter both air and water pollutants.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 98%

Section: Surface Characterizationmentioning

confidence: 99%

Section: Surface Characterizationmentioning

confidence: 99%

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Electrospun Polyacrylonitrile Nanofibrous Membranes for Point‐of‐Use Water and Air Cleaning

Roche

Yalçinkaya

2019

ChemistryOpen

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“…The incorporated functional groups were verified, by the authors, using the XPS or FTIR techniques, with the associated reduction of the peak of the C–C and C–H bonds [ 5 , 12 , 32 ]. These modifications have been made in polymers such as: polypropylene [ 11 , 31 ], polyethylene [ 3 , 12 , 32 , 33 ], poly (lactic acid) [ 4 , 34 ], polyester [ 9 , 26 , 35 ], and others [ 10 , 29 , 36 , 37 , 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

et al. 2020

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In this work, the plasma was used in the dielectric barrier discharge (DBD) technique for modifying the high-density polyethylene (HDPE) surface. The treatments were performed via argon or oxygen, for 10 min, at a frequency of 820 Hz, voltage of 20 kV, 2 mm distance between electrodes, and atmospheric pressure. The efficiency of the plasma was determined through the triple Langmuir probe to check if it had enough energy to promote chemical changes on the material surface. Physicochemical changes were diagnosed through surface characterization techniques such as contact angle, attenuated total reflection to Fourier transform infrared spectroscopy (ATR-FTIR), X-ray excited photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). Plasma electronics temperature showed that it has enough energy to break or form chemical bonds on the material surface, impacting its wettability directly. The wettability test was performed before and after treatment through the sessile drop, using distilled water, glycerin, and dimethylformamide, to the profile of surface tensions by the Fowkes method, analyzing the contact angle variation. ATR-FTIR and XPS analyses showed that groups and bonds were altered or generated on the surface when compared with the untreated sample. The AFM showed a change in roughness, and this directly affected the increase of wettability.

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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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Effect of argon plasma treatment on hydrophilic stability of nanofiber webs

Cited by 13 publications

References 84 publications

Electrospun Polyacrylonitrile Nanofibrous Membranes for Point‐of‐Use Water and Air Cleaning

Electrospun Polyacrylonitrile Nanofibrous Membranes for Point‐of‐Use Water and Air Cleaning

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

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

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