Low-temperature plasma treatment for hydrophobicity improvement of silk

Chaivan, P.; Pasaja, Nitisak; Boonyawan, Dheerawan; Suanpoot, Pradoong; Vilaithong, T.

doi:10.1016/j.surfcoat.2004.08.144

Cited by 84 publications

(52 citation statements)

References 12 publications

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“…Synthesized films have been widely used in various applications such as anticorrosive surfaces, humidity sensors, electrical resistors, scratch resistant coatings, optical filters, protective coatings and chemical barrier coatings [2]. The second plasma treatment process is plasma grafting after an activation of the surface by plasma discharge [3]. Similar to plasma polymerization, various monomers can be grafted/graft-polymerized onto various surfaces.…”

Section: Introductionmentioning

confidence: 99%

Environmentally-Friendly RF Plasma Treatment of Thai Silk Fabrics with Chitosan for Durable Antibacterial Property

Wongsawaeng¹,

Khemngern²,

Somboonna³

2017

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Abstract. A 13.56 MHz RF plasma discharge was successfully utilized to activate and coat Thai silk fabrics with chitosan for durable antibacterial property. Uncolored and untreated Thai silk fabrics were activated in Ar plasma for 5 minutes with an optimized RF power of 120 W under Ar pressure of 0.8 Torr. After plasma activation, specimens were submerged and stirred in a 1% (w/v) chitosan solution. FTIR analysis confirmed the presence of chitosan on the silk fabrics. From SEM analysis, chitosan was observed to coat silk fibers almost everywhere. RF plasma treated fabrics were able to absorb the chitosan solution substantially faster than those without the treatment. Another benefit of increased hydrophilicity is the ability of the treated fabrics to allow human perspiration to flow through more effectively, providing additional comfort when worn in tropical-zone countries. Antibacterial properties against E. coli and S. aureus reduced with increasing washing cycles dropping to approximately 95% after 5 rounds of washing. Extrapolation of linear trend lines revealed that for the case of E. coli, it will take approximately 16 washing cycles to reduce the antibacterial ability to 90%. For the case of S. aureus, it will take approximately 10 washing cycles to reduce the antibacterial ability to 90%. Fabrics without RF plasma treatment prior to chitosan solution submersion will have their antibacterial ability for E. coli and S. aureus reduced to 90% after only about 5 washing cycles. Thus, RF plasma treatment can effectively induce chitosan to provide a strong and durable coating for Thai silk fabrics, thus, offering a new, very environmentally-friendly coating technique for Thai silk with chitosan for potential use in the textile industry.

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Section: Introductionmentioning

confidence: 99%

Environmentally-Friendly RF Plasma Treatment of Thai Silk Fabrics with Chitosan for Durable Antibacterial Property

Wongsawaeng¹,

Khemngern²,

Somboonna³

2017

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“…Recently, plasma surface modification of textile materials found to replace the wet chemical, thermal and radiative processes [1][2][3][4]. Plasma is a partially ionized gas which when hits the surface of the material, modifies the surface property to a depth from 50-500Å without changing the entire material property [5,6].These ionized gas containing excited atoms, free radicals, electrons, ions and molecules interact physically and chemically with the fabric surface [7].…”

Section: Introductionmentioning

confidence: 99%

Physico-chemical Analysis of Oxygen Plasma and Enzyme Treated Cotton Fabrics

E.Nithya¹

2015

IJIRSET

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Oxygen plasma treatment and/or cellulase enzyme treatment was carried to improve the surface properties of cotton fabrics for medical applications. The influence of Plasma (P), enzyme (E), plasma preceded by enzyme (EP) and enzyme preceded by plasma (PE) treatments on hydrophilicity of the cotton fabrics was studied using standard wicking test. The physical and chemical modification due to plasma and enzymatic treatments were analyzed using SEM and ATR-FTIR spectroscopy. The FTIR results revealed that the oxygen plasma has modified the surface chemically by introducing oxygen containing groups (C=O, C-O, COO -) onto the fabric surface and enzyme have hydrolyzed the cellulose molecule. The physical etching of the fabric surface was observed in SEM photographs and weight loss measurements. The modified fabrics were given antimicrobial finish and tested for its antimicrobial activity against S.aureus and E.coli using AATCC 100 test. The EP treated fabric was found to have 100% bacterial reduction. The wash durability of the finished fabrics was also assessed and the results are discussed.

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“…Nowadays, researches of using it to modify the surface properties of textile materials are focusing on these aspects: wool antifelting, textile preprocessing, synthetic fiber improving dyeing property, and textile functional finishing. [14][15][16][17][18][19][20] Kan et al used low-temperature nitrogen plasma to improve the antifelting performance of wool fabrics.…”

Section: Introductionmentioning

confidence: 99%

“…18 Chaivan et al modified the surface of silk with SF 6 low-temperature plasma to make the surface highly hydrophobic. 19 Tsafack and Levalois-Grü tzmacher introduced acrylate monomer containing phosphorus into cotton fabric surface, which initiated by low-temperature argon plasma treatment to make the fabric with flame-retardant property. 20 About plasma surface modification performed under atmospheric pressure, several research works have been done.…”

Section: Introductionmentioning

confidence: 99%

Inkjet printing effects of pigment inks on silk fabrics surface‐modified with O₂ plasma

Fang

Wang

et al. 2007

J of Applied Polymer Sci

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Without any preprocessing, silk fabric has lower ability to hold on water due to the smooth morphology of silk fibers. Therefore, patterns directly printed with pigment inks have poor color yields and easily bleed. Plasma surface-treatment of silk fabric was carried out in an oxygen atmosphere under different experimental conditions. The samples were printed with magenta pigment ink after treatment. The results showed that the optimum treatment conditions we obtained were exposure time of 10 min at a working pressure of 50 Pa and a working power around 80 W. At such conditions, surface-modified silk fabrics could obtain the effects of features with enhanced color yields and excellent pattern sharpness. Atomic force microscope images indicated that low-temperature oxygen plasma initiated modifications to the surface of silk fiber with more grooves. Dynamic contact angle analysis showed that the hydrophilicity of silk fiber was remarkably improved after pretreatment with plasma.

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Low-temperature plasma treatment for hydrophobicity improvement of silk

Cited by 84 publications

References 12 publications

Environmentally-Friendly RF Plasma Treatment of Thai Silk Fabrics with Chitosan for Durable Antibacterial Property

Environmentally-Friendly RF Plasma Treatment of Thai Silk Fabrics with Chitosan for Durable Antibacterial Property

Physico-chemical Analysis of Oxygen Plasma and Enzyme Treated Cotton Fabrics

Inkjet printing effects of pigment inks on silk fabrics surface‐modified with O₂ plasma

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Low-temperature plasma treatment for hydrophobicity improvement of silk

Cited by 84 publications

References 12 publications

Environmentally-Friendly RF Plasma Treatment of Thai Silk Fabrics with Chitosan for Durable Antibacterial Property

Environmentally-Friendly RF Plasma Treatment of Thai Silk Fabrics with Chitosan for Durable Antibacterial Property

Physico-chemical Analysis of Oxygen Plasma and Enzyme Treated Cotton Fabrics

Inkjet printing effects of pigment inks on silk fabrics surface‐modified with O2 plasma

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Inkjet printing effects of pigment inks on silk fabrics surface‐modified with O₂ plasma