Plasma Treatment of Polyamide Fabric Surface by Hybrid Corona-Dielectric Barrier Discharge: Material Characterization and Dyeing/Washing Processes

Gasi, Fernando; Filho, Gilberto Petraconi; Bittencourt, Edison; Lourenço, Sérgio Ricardo; Castro, Alonso Herman Ricci; Miranda, Felipe; Essiptchouk, A. M.; Nascimento, Larissa; Petraconi, André; Fraga, Mariana Amorim; Pessoa, Rodrigo Sávio

doi:10.1590/1980-5373-mr-2019-0255

Cited by 18 publications

(12 citation statements)

References 18 publications

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“…An increase in the peak intensities for argon–oxygen plasma treated nanofibers can be attributed to the presence of bigger crystallites or an increase in the crystallinity fraction. In agreement to our results, two research groups recently reported appearance of new peaks in the XRD spectra of polyamide fibers after plasma activation [ 51 , 52 ].…”

Section: Resultssupporting

confidence: 93%

Argon and Argon–Oxygen Plasma Surface Modification of Gelatin Nanofibers for Tissue Engineering Applications

Mozaffari

Gashti²,

Mirjalili

et al. 2021

Membranes

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In the present study, we developed a novel approach for functionalization of gelatin nanofibers using the plasma method for tissue engineering applications. For this purpose, tannic acid-crosslinked gelatin nanofibers were fabricated with electrospinning, followed by treatment with argon and argon–oxygen plasmas in a vacuum chamber. Samples were evaluated by using scanning electron microscopy (SEM), atomic force microscopy (AFM), attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, contact angle (CA) and X-ray diffraction (XRD). The biological activity of plasma treated gelatin nanofibers were further investigated by using fibroblasts as cell models. SEM studies showed that the average diameter and the surface morphology of nanofibers did not change after plasma treatment. However, the mean surface roughness (RMS) of samples were increased due to plasma activation. ATR-FTIR spectroscopy demonstrated several new bands on plasma treated fibers related to the plasma ionization of nanofibers. The CA test results stated that the surface of nanofibers became completely hydrophilic after argon–oxygen plasma treatment. Finally, increasing the polarity of crosslinked gelatin after plasma treatment resulted in an increase of the number of fibroblast cells. Overall, results expressed that our developed method could open new insights into the application of the plasma process for functionalization of biomedical scaffolds. Moreover, the cooperative interplay between gelatin biomaterials and argon/argon–oxygen plasmas discovered a key composition showing promising biocompatibility towards biological cells. Therefore, we strongly recommend plasma surface modification of nanofiber scaffolds as a pretreatment process for tissue engineering applications.

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Section: Resultssupporting

confidence: 93%

Argon and Argon–Oxygen Plasma Surface Modification of Gelatin Nanofibers for Tissue Engineering Applications

Mozaffari

Gashti²,

Mirjalili

et al. 2021

Membranes

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“…Pristine half-knitted fabric composed of 92% polyamide 6.6 (PA6.6, Rhodia Solvay Group, Santo André, Brazil) and 8% elastane (Lycra brand, Invista, São Paulo, Brazil) was used in this work. This knitted fabric was produced in fine machinery (38 needles per inch) with a surface mass of 180 g/m 2 [ 27 ]. The fabrics were cut into 10 × 8 cm 2 pieces and then washed with a 1% non-ionic detergent solution at room temperature for 30 min and rinsed with water for 10 min to avoid contamination.…”

Section: Methodsmentioning

confidence: 99%

Physicochemical Studies on the Surface of Polyamide 6.6 Fabrics Functionalized by DBD Plasmas Operated at Atmospheric and Sub-Atmospheric Pressures

et al. 2020

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This work proposes the use of a dielectric barrier discharge (DBD) reactor operating at atmospheric pressure (AP) using air and sub-atmospheric pressure (SAP) using air or argon to treat polyamide 6.6 (PA6.6) fabrics. Here, plasma dosages corresponding to 37.5 kW·min·m−2 for AP and 7.5 kW·min·m−2 for SAP in air or argon were used. The hydrophilicity aging effect property of untreated and DBD-treated PA6.6 samples was evaluated from the apparent contact angle. The surface changes in physical microstructure were studied by field emission scanning electron microscopy (FE-SEM). To prove the changes in chemical functional groups in the fibers, Fourier transform infrared spectroscopy (FTIR) was used, and the change in surface bonds was evaluated by energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). In addition, the whiteness effect was investigated by the color spectrophotometry (Datacolor) technique. The results showed that the increase in surface roughness by the SAP DBD treatment contributed to a decrease in and maintenance of the hydrophilicity of PA6.6 fabrics for longer. The SAP DBD in air treatment promoted an enhancement of the aging effect with a low plasma dosage (5-fold reduction compared with AP DBD treatment). Finally, the SAP DBD treatment using argon functionalizes the fabric surface more efficiently than DBD treatments in air.

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“…To call it a structural change would be a misnomer since it involves the production of functional groups on a cloth fabric surface when the active species, such as free radicals generated by the air ionization, react with atoms or molecules there. This process is often researched in textile surface treatment methods [ 24 , 59 ] and usually does not result in any perceptible structural changes in the fabric, but rather in their functional properties, such as non-wrinkling or fire retardation. These functional groups can be detected via Fourier transform infrared (FTIR) spectroscopy through comparison between two identical fabric samples, one of which is untreated and the other is treated.…”

Section: Characterizationmentioning

confidence: 99%

“…Whereas CDT and its close relative plasma treatment are used to treat knitted or woven cloth fabrics to improve dye retention, flame resistance, etc. [24][25][26][27][28][29][30], applying CDT to electrocharge knitted cloth fabrics has not been reported to our knowledge. On the other hand, non-woven polymer electret fabrics are routinely treated with corona discharge to improve their electrocharging characteristics [31,32].…”

Section: Introductionmentioning

confidence: 99%

Electrocharging face masks with corona discharge treatment

Bandi¹,

Ishizu²,

Kang³

2021

Proc. R. Soc. A.

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We detail an experimental method to electrocharge N95 facepiece respirators and face masks (FMs) made from a variety of fabrics (including non-woven polymer and knitted cloth) using corona discharge treatment (CDT). We present practical designs to construct a CDT system from commonly available parts and detail calibrations performed on different fabrics to study their electrocharging characteristics. After confirming the post-CDT structural integrity of fabrics, measurements showed that all non-woven polymer electret and only some knitted cloth fabrics are capable of charge retention. Whereas polymeric fabrics follow the well-known isothermal charging route, ion adsorption causes electrocharging in knitted cloth fabrics. Filtration tests demonstrate improved steady filtration efficiency in non-woven polymer electret filters. On the other hand, knitted cloth fabric filters capable of charge retention start with improved filtration efficiency which decays in time over up to 7 h depending on the fabric type, with filtration efficiency tracking the electric discharge. A rapid recharge for a few seconds ensures FM reuse over multiple cycles without degradation.

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Plasma Treatment of Polyamide Fabric Surface by Hybrid Corona-Dielectric Barrier Discharge: Material Characterization and Dyeing/Washing Processes

Cited by 18 publications

References 18 publications

Argon and Argon–Oxygen Plasma Surface Modification of Gelatin Nanofibers for Tissue Engineering Applications

Argon and Argon–Oxygen Plasma Surface Modification of Gelatin Nanofibers for Tissue Engineering Applications

Physicochemical Studies on the Surface of Polyamide 6.6 Fabrics Functionalized by DBD Plasmas Operated at Atmospheric and Sub-Atmospheric Pressures

Electrocharging face masks with corona discharge treatment

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