{"data":{"id":"10.6084/m9.figshare.7676630.v1","type":"dois","attributes":{"doi":"10.6084/m9.figshare.7676630.v1","prefix":"10.6084","suffix":"m9.figshare.7676630.v1","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Oliveira, Celio Jorge Vasques De","nameType":"Personal","givenName":"Celio Jorge Vasques De","familyName":"Oliveira","affiliation":[],"nameIdentifiers":[]},{"name":"Weber, Ricardo Ponde","nameType":"Personal","givenName":"Ricardo Ponde","familyName":"Weber","affiliation":[],"nameIdentifiers":[]},{"name":"Monteiro, Sergio Neves","nameType":"Personal","givenName":"Sergio Neves","familyName":"Monteiro","affiliation":[],"nameIdentifiers":[]},{"name":"Vital, Hélio Carvalho","nameType":"Personal","givenName":"Hélio Carvalho","familyName":"Vital","affiliation":[],"nameIdentifiers":[]},{"name":"Dias, Marcos Lopes","nameType":"Personal","givenName":"Marcos Lopes","familyName":"Dias","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Evaluation of Fracture Toughness of Ultraviolet-Irradiated Polycarbonate Using the Essential Work of Fracture Method"}],"publisher":"SciELO journals","container":{},"publicationYear":2019,"subjects":[{"subject":"90499 Chemical Engineering not elsewhere classified","subjectScheme":"FOR"},{"subject":"FOS: Chemical engineering","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Chemical engineering","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"91207 Metals and Alloy Materials","subjectScheme":"FOR"},{"subject":"FOS: Materials engineering","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Materials engineering","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"91299 Materials Engineering not elsewhere classified","subjectScheme":"FOR"}],"contributors":[],"dates":[{"date":"2019-02-06","dateType":"Created"},{"date":"2019-02-06","dateType":"Updated"},{"date":"2019","dateType":"Issued"}],"language":null,"types":{"ris":"DATA","bibtex":"misc","citeproc":"dataset","schemaOrg":"Dataset","resourceType":"Dataset","resourceTypeGeneral":"Dataset"},"relatedIdentifiers":[{"relationType":"IsSupplementTo","relatedIdentifier":"10.1590/1980-5373-mr-2017-1079","relatedIdentifierType":"DOI"},{"relationType":"IsIdenticalTo","relatedIdentifier":"10.6084/m9.figshare.7676630","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":["2194220 Bytes"],"formats":[],"version":null,"rightsList":[{"rights":"Creative Commons Attribution 4.0 International","rightsUri":"https://creativecommons.org/licenses/by/4.0/legalcode","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"cc-by-4.0","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"description":"The essential work of fracture (EWF) method provides useful parameters to characterize the fracture toughness of polymers exposed to degrading environments under conditions associated with plane-stress state of failure. Exposure of polymeric engineering materials to ultraviolet (UV) radiation may produce macromolecular changes that impair their fracture toughness. In the present work, for the first time, the EWF method applying a double edge notched tensile specimen was used to quantify the fracture toughness behavior of polycarbonate (PC) exposed to different, 300 h and 600 h, UV irradiation times. In addition, molar weight M ─ n determination, differential scanning calorimetry (DSC), Fourier transformed infrared spectroscopy (FTIR) and tensile tests were also investigated for non-irradiated and UV irradiated PC. The EWF results and scanning electron microscopy analysis revealed a significant reduction (39 % for 300h and 45 % for 600h of UV exposure) in fracture toughness associated with scission of the macromolecular chains. Other investigated properties, such as M ─ n, glass transition temperature, oxidation index and tensile strength, despite decreasing with UV exposure, did not show conclusive values.","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"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","url":"https://scielo.figshare.com/articles/Evaluation_of_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