Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/572
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dc.contributor.authorAbourayana, Hisham M.en
dc.contributor.authorMilosavljević, Vladimiren
dc.contributor.authorDobbyn, Peteren
dc.contributor.authorDowling, Denis P.en
dc.date.accessioned2022-07-12T16:01:37Z-
dc.date.available2022-07-12T16:01:37Z-
dc.date.issued2017-07-01en
dc.identifier.issn0272-4324en
dc.identifier.urihttps://physrep.ff.bg.ac.rs/handle/123456789/572-
dc.description.abstractThis study investigates the influence of treatment frequency (1–150 kHz) on the atmospheric plasma activation of both silicone and polyethylene terephthalate (PET) particles. These polymer particles with diameters in the range 3–5 mm, were treated using either helium or helium/oxygen gas mixtures, in a barrel atmospheric plasma system. The level of polymer particles activation was monitored using water contact angle measurements. The effect of plasma treatment frequency on barrel heating was monitored using an infrared thermographic camera, the maximum barrel temperature after 15 min treatment was found to be 98 °C at a frequency of 130 kHz. Optical emission spectroscopy was used as a diagnostic tool to monitor changes in atomic and molecular species spectral intensity with experimental conditions, as well as a change in electron energy distribution function. Electrical characterisation studies demonstrated an increase in plasma power with increasing frequency, in the range investigated. X-ray photoelectron spectroscopy analysis indicate an increase of oxygen content on polymer surfaces after plasma treatment. For silicone particles, the minimum polymer water contact angle was obtained by using a frequency of 130 kHz. After 15 min treatment time, the water contact angle decreased from 141° to 11°. While for PET particles the optimum treatment frequency was found to be 70 kHz, resulting in a water contact angle decreased from 94° to 32°. This lower frequency was used due to the partial melting of the PET (Tg of 80 °C), when treated at the higher frequency.en
dc.relation.ispartofPlasma Chemistry and Plasma Processingen
dc.subjectAtmospheric plasmaen
dc.subjectBarrel reactoren
dc.subjectFrequencyen
dc.subjectSurface activationen
dc.titleEvaluation of the Effect of Plasma Treatment Frequency on the Activation of Polymer Particlesen
dc.typeArticleen
dc.identifier.doi10.1007/s11090-017-9810-1en
dc.identifier.scopus2-s2.0-85015930768en
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85015930768en
dc.relation.issue4en
dc.relation.volume37en
dc.relation.firstpage1223en
dc.relation.lastpage1235en
item.grantfulltextnone-
item.openairetypeArticle-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextNo Fulltext-
crisitem.author.orcid0000-0002-7805-5189-
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