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[{"key": "dc.contributor.advisor", "value": "Louhelainen, Jarmo", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "M\u00e4ntyl\u00e4, Markku", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Ojanen, Helena", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-06-10T09:19:06Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-06-10T09:19:06Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/95701", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4n Pro gradu- tutkielman kirjallisessa osassa k\u00e4sitell\u00e4\u00e4n biopohjaisten p\u00e4\u00e4llysteiden k\u00e4ytt\u00f6\u00e4 ja mittausmahdollisuuksia paperi- ja kartonkiteollisuudessa. Kirjallisessa osassa tarkastellaan paperin ja kartongin p\u00e4\u00e4llystyksess\u00e4 k\u00e4ytett\u00e4vi\u00e4 yleisimpi\u00e4 yhdisteit\u00e4 ja niiden barrier-ominaisuuksia. Erityisesti tarkastelussa ovat biopohjaiset p\u00e4\u00e4llysteet, jotka EU:n SUP (single-use plastic, kertak\u00e4ytt\u00f6muovi) -direktiivin my\u00f6t\u00e4 tulevat yleistym\u00e4\u00e4n seuraavien vuosien aikana. P\u00e4\u00e4llysteiden lis\u00e4ksi tutkielmassa tarkastellaan ekstruusio- ja dispersiop\u00e4\u00e4llysteiden kierr\u00e4tett\u00e4vyytt\u00e4 ja kompostoituvuutta. Ekstruusiop\u00e4\u00e4llystyksess\u00e4 k\u00e4ytet\u00e4\u00e4n yleisesti synteettisi\u00e4 muoveja, kun taas dispersiop\u00e4\u00e4llystys on yleist\u00e4 biopohjaisilla p\u00e4\u00e4llysteill\u00e4.\nKirjallisessa osassa k\u00e4yd\u00e4\u00e4n l\u00e4pi my\u00f6s p\u00e4\u00e4llystem\u00e4\u00e4r\u00e4n mittaamiseen soveltuvien menetelmien teoriaa sek\u00e4 kirjallisuudessa esiintyvi\u00e4 tutkimuksia kyseess\u00e4 olevista menetelmist\u00e4. Lopuksi k\u00e4sitell\u00e4\u00e4n viel\u00e4 lyhyesti p\u00e4\u00e4llysteen laadunvalvontaa paperi- ja kartonkikoneilla. \nTy\u00f6n kokeellisessa osuudessa valmistettiin styreeniakrylaatti- ja styreenibutadieenilateksisarjat, joiden avulla m\u00e4\u00e4ritettiin korrelaatio kullekin mittausmenetelm\u00e4lle. Mittausmenetelmin\u00e4 k\u00e4ytettiin keski- ja NIR-alueen IR spektrometri\u00e4 sek\u00e4 UV-Vis-spektrometri\u00e4. Kalibroitujen lateksisarjojen avulla voitiin m\u00e4\u00e4ritt\u00e4\u00e4 lateksien m\u00e4\u00e4r\u00e4t kaupallisissa p\u00e4\u00e4llysteiss\u00e4.\nKalibrointien tekeminen styreeniakrylaatti- ja styreenibutadieenilateksille onnistui kaikilla menetelmill\u00e4. Kaupallisten p\u00e4\u00e4llysteiden lateksim\u00e4\u00e4r\u00e4n mittaamisessa ongelmia tuottivat kaupalliset p\u00e4\u00e4llysteet, joiden tarkkaa koostumusta ei tiedetty. Kaupallisten p\u00e4\u00e4llysteiden lateksim\u00e4\u00e4r\u00e4t, jotka saatiin mitattua, olivat v\u00e4lill\u00e4 40\u201370 % kokonaisp\u00e4\u00e4llystem\u00e4\u00e4r\u00e4st\u00e4. Kokeellisessa osuudessa huomattiin, ett\u00e4 monomeerien suhde latekseissa sek\u00e4 muut samankaltaiset yhdisteet kuin merkkiaine p\u00e4\u00e4llysteess\u00e4 v\u00e4hent\u00e4v\u00e4t mittauksen tarkkuutta. T\u00e4m\u00e4n takia on t\u00e4rke\u00e4\u00e4 tiet\u00e4\u00e4 mitattavan p\u00e4\u00e4llysteen koostumus ja resepti ennen mittausta. Tutkielma loi hyv\u00e4n pohjan lateksien k\u00e4ytt\u00e4miseen merkkiaineena kokonaisp\u00e4\u00e4llystem\u00e4\u00e4r\u00e4mittauksessa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2024-06-10T09:19:06Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-06-10T09:19:06Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "108", "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": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "biop\u00e4\u00e4llysteet", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Biobarrierien mittausmenetelm\u00e4t paperin ja kartongin jatkojalostuksessa", "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-202406104472", "language": null, "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": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Chemistry", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Kemian laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Analytical Chemistry", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Analyyttinen kemia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.collaborator", "value": "business", "language": "", "element": "contractresearch", "qualifier": "collaborator", "schema": "yvv"}, {"key": "yvv.contractresearch.funding", "value": "17400", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "yvv.contractresearch.initiative", "value": "student", "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.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": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "laadunvalvonta", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "lateksit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mittausmenetelm\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "paperiteollisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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