{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T04:35:04Z","timestamp":1779338104911,"version":"3.51.4"},"reference-count":68,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2017,2,25]],"date-time":"2017-02-25T00:00:00Z","timestamp":1487980800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004329","name":"Javna Agencija za Raziskovalno Dejavnost RS","doi-asserted-by":"publisher","award":["L7-6782"],"award-info":[{"award-number":["L7-6782"]}],"id":[{"id":"10.13039\/501100004329","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Samples of polymer polyethylene terephthalate were exposed to a weakly ionized gaseous plasma to modify the polymer surface properties for better cell cultivation. The gases used for treatment were sulfur dioxide and oxygen of various partial pressures. Plasma was created by an electrodeless radio frequency discharge at a total pressure of 60 Pa. X-ray photoelectron spectroscopy showed weak functionalization of the samples\u2019 surfaces with the sulfur, with a concentration around 2.5 at %, whereas the oxygen concentration remained at the level of untreated samples, except when the gas mixture with oxygen concentration above 90% was used. Atomic force microscopy revealed highly altered morphology of plasma-treated samples; however, at high oxygen partial pressures this morphology vanished. The samples were then incubated with human umbilical vein endothelial cells. Biological tests to determine endothelialization and possible toxicity of the plasma-treated polyethylene terephthalate samples were performed. Cell metabolic activity (MTT) and in vitro toxic effects of unknown compounds (TOX) were assayed to determine the biocompatibility of the treated substrates. The biocompatibility demonstrated a well-pronounced maximum versus gas composition which correlated well with development of the surface morphology.<\/jats:p>","DOI":"10.3390\/polym9030082","type":"journal-article","created":{"date-parts":[[2017,2,27]],"date-time":"2017-02-27T11:00:20Z","timestamp":1488193220000},"page":"82","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Cell Proliferation on Polyethylene Terephthalate Treated in Plasma Created in SO2\/O2 Mixtures"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5389-8262","authenticated-orcid":false,"given":"Nina","family":"Recek","sequence":"first","affiliation":[{"name":"Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4373-9334","authenticated-orcid":false,"given":"Matic","family":"Resnik","sequence":"additional","affiliation":[{"name":"Jozef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1366-9147","authenticated-orcid":false,"given":"Rok","family":"Zaplotnik","sequence":"additional","affiliation":[{"name":"Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miran","family":"Mozetic","sequence":"additional","affiliation":[{"name":"Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helena","family":"Motaln","sequence":"additional","affiliation":[{"name":"National Institute of Biology, Vecna pot 111, 1000 Ljubljana, Slovenia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tamara","family":"Lah-Turnsek","sequence":"additional","affiliation":[{"name":"National Institute of Biology, Vecna pot 111, 1000 Ljubljana, Slovenia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3782-6001","authenticated-orcid":false,"given":"Alenka","family":"Vesel","sequence":"additional","affiliation":[{"name":"Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,2,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"015026","DOI":"10.1088\/0963-0252\/24\/1\/015026","article-title":"Application of extremely non-equilibrium plasmas in the processing of nano and biomedical materials","volume":"24","author":"Mozetic","year":"2015","journal-title":"Plasma Sources Sci. 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