Naslov
Atmospheric Pressure Plasma Treatment of Wool Yarns

Autori
Peran, Jelena ; Grgić, Danijela ; Ercegović Ražić, Sanja ; Milošević, Slobodan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Programme and Book of Abstracts of 25th International Science Meeting on Vacuum Science and Technique / Kovač, J. ; Junkar, I. - Ljubljana : Slovenian Society for Vacuum Technique (DVTS), 2018, 38-38

ISBN
978-961-94431-0-1

Skup
25th International Scientific Meeting on Vacuum Science and Technique

Mjesto i datum
Gozd Martuljek, Slovenija, 17.05.2018. - 18.05.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
atmospheric plasma jet, wool yarns, physical and mechanical properties, surface changes

Sažetak
The application of low temperature plasmas in the field of textile industry started in the second half of the 20th century. Since then, plasma technology has emerged as an environmentally friendly alternative to conventional wet processing of textiles that includes high consumption of water, chemicals and energy. Low-pressure plasma is well-known and developed technology with outstanding features such as high concentration of reactive species, superior chemical selectivity and good stability and uniformity in surface modification of textiles. Atmospheric pressure plasma (APP) has emerged as a cost-competitive technology with a possibility of integration in a conventional production line for continuous processing of textile materials. APP treatment is usually applied as a pretreatment process for cleaning, etching and activation of textile surface. It is the first step involved in textile wet processing that removes natural impurities and those added during the process of manufacture thus making the fibre accessible to water, dyes and finishing chemicals. APPs suitable for textile treatments are (i) corona discharge, (ii) dielectric barrier discharge (DBD), (iii) atmospheric pressure glow discharge (APGD) and (iv) atmospheric pressure plasma jet (APPJ) [1]. In this research, for the treatment of siro wool yarns, an atmospheric pressure argon plasma was used, described in previous work [2] and developed at The Institute of Physics Zagreb. The yarn was continuously passing through 130 mm long glass tube of outer diameter 4 mm and inner diameter 1 mm in which argon plasma was generated. Applied plasma parameters were: gas flow rate 2.2 l/min, frequency about 25 kHz, current amplitude around 5 mA, amplitude voltage of 5 kV, power of 2.5 W and yarn speed movement 1.28 cm/s [3]. Analysis of morphological changes using scanning electron microscope (SEM) revealed cleaning of the surface and indications of etching of wool scales. After APP treatment breaking force increased by 26.6 % and breaking elongation by 34.7 % compared to untreated samples. This could be due to etching of the surfaces which caused higher friction between fibres and therefore higher force is required to overcome frictional force and for breakage to occur. Modification of breaking elongation can be attributed to softening of the wool scales making the fibre more elastic. Hairiness and unevenness of the yarn were examined in order to assess the impact of APP treatment on physical properties of wool yarn. A slight decrease of yarn unevenness was observed, whereas the hairiness increased. Subsequent winding of the yarn directly after plasma treatment could have additionally influenced hairiness. It can be concluded that atmospheric pressure argon plasma treatment can have significant impact on mechanical and physical properties of wool yarn. Further researcher needs to be conducted in order to examine influence of plasma on yarn hairiness.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Tekstilna tehnologija

Napomena
Sredstva osigurana iz Potpore istraživanju: KFPI_TP7/18: Antimikrobna svojstva tekstilnih materijala obrađenih ekološkim postupcima obrade (voditelj: doc.dr.sc. Sanja Ercegović Ražić)

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