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[{"key": "dc.contributor.advisor", "value": "Louhelainen, Jarmo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Seunti\u00ebns, Katri", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Tervo, Joni", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-12-11T07:38:26Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-12-11T07:38:26Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/92238", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Pyritt\u00e4ess\u00e4 korvaamaan muovisia pakkausmateriaaleja, nousee kartonki hyv\u00e4ksi vaihtoehdoksi. T\u00e4ss\u00e4 tutkielmassa k\u00e4sitell\u00e4\u00e4n elintarvikekontaktiin k\u00e4ytett\u00e4vien kartonkien valmistusta sek\u00e4 valmistuksessa k\u00e4ytett\u00e4vien massaliimojen, erityisesti alkyyliketeenidimeerien (AKD), ominaisuuksia kartongin hydrofobisuuden parantamiseen. Massaliimojen k\u00e4ytt\u00f6\u00f6n sek\u00e4 niiden pitoisuuksiin elintarvikekontaktimateriaaleissa liittyy runsaasti lakeja sek\u00e4 s\u00e4\u00e4d\u00f6ksi\u00e4, joita k\u00e4sitell\u00e4\u00e4n osana tutkielmaa. My\u00f6s eri analyysimenetelmi\u00e4 sek\u00e4 menetelmien validointia k\u00e4sitell\u00e4\u00e4n omassa alaluvussaan.\nTy\u00f6ss\u00e4 m\u00e4\u00e4ritettiin kolmen kartongin valmistuksessa k\u00e4ytett\u00e4v\u00e4n AKD-massaliiman eroja niiden retentioissa sek\u00e4 n\u00e4iden vaikutusta kartongin hydrofobisuuteen. Kyseiset kolme AKD-laatua olivat polymeeri- ja t\u00e4rkkistabiloidut kationiset C18 pohjaiset AKD:t (PKC18 ja TKC18) sek\u00e4 t\u00e4rkkistabiloitu ja promovoitu kationinen C18 pohjainen AKD (TPKC18). Suurin kokonais-AKD -pitoisuus, 1,22 mg/g kartonkia, analysoitiin tuoreesta PKC18:sta. Pienin kokonais-AKD -pitoisuus, 0,76 mg/g kartonkia, analysoitiin kypsytetyst\u00e4 TKC18:sta. Kypsytetyiss\u00e4 n\u00e4ytteiss\u00e4 retentoituneen AKD:n osuuden kasvu kyettiin havaitsemaan verrattaessa n\u00e4ytteit\u00e4 tuoreisiin n\u00e4ytteisiin. Sitoutuneen AKD:n osuus kypsytett\u00e4ess\u00e4 kasvoi eniten, 8,8 \u2192 21,1 %, TKC18:ssa. Pienin sitoutuneen AKD:n osuuden kasvu, 15,9 \u2192 20,8 %, m\u00e4\u00e4ritettiin TPKC18:sta. N\u00e4ytteiden hydrofobisuutta arvioitiin my\u00f6s mittaamalla Cobb180-arvot. Pienin Cobb180-arvo, 46 g/m2, mitattiin kypsytetyst\u00e4 PKC18:sta ja suurin, 73 g/m2, kypsytetyst\u00e4 TPKC18:sta.\nRetention lis\u00e4ksi elintarvikekontaktia ja siin\u00e4 tapahtuvaa dialkyyliketonien (DAK) migraatiota elintarvikkeisiin simuloitiin iso-oktaanilla, oliivi\u00f6ljyll\u00e4 ja modifioidulla polyfenyleenioksidilla, eli Tenax\u00ae:lla. Raja-arvona migratoituvan DAK:n m\u00e4\u00e4r\u00e4lle pidet\u00e4\u00e4n BfR:n m\u00e4\u00e4ritt\u00e4m\u00e4\u00e4 5 mg/kg elintarviketta. Pienimm\u00e4t DAK:n Tenax\u00ae- ja oliivi\u00f6ljymigraation tulokset m\u00e4\u00e4ritettiin TKPC18:sta, Tenax\u00ae-migraation tulos oli 0,03 mg/kg elintarviketta ja oliivi\u00f6ljymigraation 1,00 mg/kg elintarviketta. L\u00e4himp\u00e4n\u00e4 BfR:n raja-arvon rikkoutumista oli TKPC18:n iso-oktaanimigraatio, joka saavutti arvon 4,50 mg/kg elintarviketta.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2023-12-11T07:38:26Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-12-11T07:38:26Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "77", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "alkyyliketeenidimeeri", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "dialkyyliketoni", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "AKD", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "DAK", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "BfR", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "NIAS", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "GC-FID", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "iso-oktaani", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Tenax", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Alkyyliketeenidimeerien retentio selluloosakuituun ja dialkyyliketonien migraatio simulantteihin", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202312118238", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Kemian laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Chemistry", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Analyyttinen kemia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Analytical Chemistry", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.collaborator", "value": "business", "language": "", "element": "contractresearch", "qualifier": "collaborator", "schema": "yvv"}, {"key": "yvv.contractresearch.funding", "value": "18000", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "yvv.contractresearch.initiative", "value": "business", "language": "", "element": "contractresearch", "qualifier": "initiative", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "40311", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kaasukromatografia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "oliivi\u00f6ljy", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kartonki", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "elintarvikkeet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kromatografia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pakkausmateriaalit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kartonkiteollisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pakkaukset", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kemiallinen analyysi", "language": null, "element": 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