Non-thermal plasma treatment of cellulosic biopolymer to enhance its surface property for various applications: A review

Vajpayee, Mona; Singh, Mumal; Ledwani, Lalita

doi:10.1016/j.matpr.2021.01.905

Cited by 13 publications

(11 citation statements)

References 42 publications

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“…The hydrophilicity of cotton treated in pure Ar or O2 plasmas has already been reported in other works [35,36]. Cotton is mainly composed of cellulose mixed with hydrophobic impurities in the cuticle layer.…”

Section: Textile Structures -Plasma Activationsupporting

confidence: 60%

EMI shielding and conductive textiles functionalized with (Ti,Cu) nanomaterials for biomedical applications

Lopes

Ferreira

Corrêa

et al. 2023

Preprint

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This study explores the potential of integrating thin film technology in the design of new and effective Electromagnetic Interference (EMI) shielding materials for textiles and wearables. This application is of particular interest to the textile industry as it can bring new functionalities to wearables and protect humans from prolonged exposure to EM radiation. Three different thin films of pure Ti, pure Cu and Ti-doped with Cu prepared by magnetron sputtering were used to functionalize textile knits based on cotton (code 39 F) and lyocell fibres (62 I). The films displayed different crystalline structures, morphologies, and topographies, which depended on their chemical compositions. The shielding effectiveness (SE) of the functionalized knits against EMI was evaluated in the frequency range of 2 GHz to 8 GHz. Also, the electrical response under stress was assessed since the electrical conductivity is closely related to the EMI shielding effectiveness. The results demonstrate the feasibility of using a thin conductive layer based on Cu to obtain shield textiles with great adhesion and low thickness, providing superior shielding efficiency for EMI by blocking the electrical waves.

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Section: Textile Structures -Plasma Activationsupporting

confidence: 60%

EMI shielding and conductive textiles functionalized with (Ti,Cu) nanomaterials for biomedical applications

Lopes

Ferreira

Corrêa

et al. 2023

Preprint

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“…The plasma pre-treated fabrics were becoming darker because they absorbed more amounts of dyes due to better wicking properties. Plasma treatment removes the wax layer and generates micro-cracks on the fabric's surface [ 80 , 81 ]. The plasma treatment results in a rougher surface and produces a larger effective surface area.…”

Section: Resultsmentioning

confidence: 99%

Surface modification and improvements of wicking properties and dyeability of grey jute-cotton blended fabrics using low-pressure glow discharge air plasma

Ullah

Akther

Rahman

et al. 2021

Heliyon

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Herein, we reported the improvements of wicking properties and dyeability of the jute-cotton blended (40:60) fabrics due to the effect of low-pressure glow discharge (LPGD) air plasma under selected exposure times. The microscopic features, functional groups, wettability, contact angles, wetting area, wicking rates, and reflectance values of the jute-cotton blended fabrics were analyzed using numerous experimental techniques. The scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) techniques were used to investigate the morphological and compositional modifications of plasma-treated jute blended cotton fabrics. The compositional analysis confirmed various functional groups such as –OH, C–O, and COO − on the surface of jute blended cotton fabrics. The average pore radii and diffusion coefficient were calculated by using the modified Lucas-Washburn equation. The plasma-treated fabrics were shown to have an average pore radius of 0.93, 1.46, 2.26, and 4.8 μm under treatment time of 5,10,15, and 20 min. Nearly 50% reduction of contact angle was observed after a plasma treatment time of 20 min. The absorption to scattered ratio, K/S (determined using Kubel-Munk model) of the colored fabrics with 5 min pre-treated plasma was 6.47, although it was raised up to 8.51 after 20 min of pre-treatment. A reactive dye, Bezaktiv Red S–3B, was used for the dyeability test, and our findings showed that the dyeability and the wettability of the fabric were substantially enhanced with the treatment time of LPGD air plasma. Among the samples, only 10 min plasma pre-treated colored fabric exhibited a color difference of less than one compared to the standard one.

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“…The hydrophilicity of cotton treated in pure Ar or O 2 plasmas has already been reported in other works. 43,44 Cotton is mainly composed of cellulose mixed with hydrophobic impurities in the cuticle layer. When submitted to a mixed Ar + O 2 plasma atmosphere, the Ar becomes responsible to etch/destroy the noncellulosic impurities present in the outermost layers of the cotton fibers, while O 2 facilitates the etching process and the formation of new chemical polar groups (e.g., hydroxyl or carboxylic groups).…”

Section: Textile Structures�plasma Activationmentioning

confidence: 99%

EMI Shielding and Conductive Textiles Functionalized with (Ti,Cu) Nanomaterials for Biomedical Applications

Lopes,

Ferreira,

Correa

et al. 2023

ACS Appl. Mater. Interfaces

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This study explores the potential of integrating thinfilm technology in the design of new and effective electromagnetic interference (EMI) shielding and conductive materials for textiles and wearables. This application is of particular interest to the textile industry as it can bring new functionalities to wearables and protect humans from prolonged exposure to EM radiation. Three different thin films of pure Ti, pure Cu, and Ti-doped with Cu prepared by magnetron sputtering were used to functionalize textile knits based on cotton (code 39F) and lyocell fibers (62I). The films displayed different crystalline structures, morphologies, and topographies, which depended on their chemical compositions. The shielding effectiveness (SE) of the functionalized knits against EMI was evaluated in the frequency range of 2−8 GHz. Also, the electrical response under stress was assessed since the electrical conductivity is closely related to the EMI shielding effectiveness. The results demonstrate the feasibility of using a thin conductive layer based on Cu or Ti−Cu to improve the shield textiles with great adhesion and low thickness, providing an interesting path to improve shielding efficiency for EMI without modifying the flexibility of the textiles.

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Non-thermal plasma treatment of cellulosic biopolymer to enhance its surface property for various applications: A review

Cited by 13 publications

References 42 publications

EMI shielding and conductive textiles functionalized with (Ti,Cu) nanomaterials for biomedical applications

EMI shielding and conductive textiles functionalized with (Ti,Cu) nanomaterials for biomedical applications

Surface modification and improvements of wicking properties and dyeability of grey jute-cotton blended fabrics using low-pressure glow discharge air plasma

EMI Shielding and Conductive Textiles Functionalized with (Ti,Cu) Nanomaterials for Biomedical Applications

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