Antistatic effect of atmospheric pressure glow discharge cold plasma treatment on textile substrates |
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Authors: | Kartick Kumar Samanta Manjeet Jassal Ashwini K Agrawal |
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Institution: | (1) The Petroleum and Petrochemical College, Chulalongkorn University, Soi Chula 12, Phyathai Road, Pathumwan, Bangkok, 10330, Thailand;(2) Center for Petroleum, Petrochemicals, and Advanced Materials, Chulalongkorn University, Bangkok, 10330, Thailand;(3) Faculty of Chemistry, Materials, and Bioengineering, and High Technology Research Center, Kansai University, Suita, Osaka 564-8680, Japan; |
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Abstract: | Hydrophobic synthetic textile substrates, nylon and polyester fabrics, were continuously treated in an atmospheric-pressure-glow-discharge-cold-plasma
reactor using He and air. The samples were evaluated for antistatic properties by measuring the static charge build-up and
half charge decay time. The 60 sec air-plasma treated nylon fabric produced only 1.53 kV of charge and showed a significantly
smaller half decay time of 0.63 sec compared to static voltage of 2.76 kV and a half decay time of 8.9 sec in the untreated
nylon fabric. In comparison, the He plasma treated nylon fabrics showed relatively less improvement by producing static charge
built-up of 2.12 kV and half charge decay time of 1.1 sec. Similar improvements were obtained for polyester (PET) fabrics
as well. The treated samples showed good antistatic properties even after five laundry wash cycles. The surface characteristics
of the samples were investigated using SEM, AFM, and ATR-FTIR. The results revealed that the improvement on antistatic properties
are attributable to increase in the surface energy of the fabrics due to the formation of hydrophilic groups and increase
in the surface area due to the formation of nano-sized horizontal and vertical channels on the fibre surface. The study suggests
that plasma treatment may be used for imparting effective antistatic finish on otherwise hydrophobic substrates. |
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