Ionizing radiation for the preservation and conservation of photographic and cinematographic films

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dc.contributor.authorNAGAI, MARIA L.E.pt_BR
dc.contributor.authorSANTOS, PAULO S.pt_BR
dc.contributor.authorOTUBO, LARISSApt_BR
dc.contributor.authorOLIVEIRA, MARIA J.A. dept_BR
dc.contributor.authorVASQUEZ, PABLO A.S.pt_BR
dc.contributor.coordenadorNAGAI, MARIA L.E.pt_BR
dc.contributor.editorVASQUEZ, PABLO A.S.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL SYMPOSIUM ON GAMMA IONIZATION: TECHNOLOGY FOR PRESERVATION OF CULTURAL HERITAGE, 1stpt_BR
dc.date.accessioned2020-03-12T16:55:00Z
dc.date.available2020-03-12T16:55:00Z
dc.date.eventoOctober 25, 2019pt_BR
dc.description.abstractThe Nuclear and Energy research Institute – IPEN-CNEN/SP through the Multipurpose Gamma Irradiation Facility has treated several bibliographical collections of Sao Paulo University-USP for disinfestation and disinfection of contaminated materials with insects and fungi. In this sense, gamma radiation from cobalt-60 is an excellent alternative tool to the traditional preservation process mainly because the biocidal action. Disinfection using gamma radiation for cultural heritage materials has been widely applied around the world in the last decades. Adequate storage of photographic and cinematographic materials is a challenge for conservation experts from preservation institutions. Contamination by fungi is one of leading causes of problem in this kind of collections. In addition, another common physicochemical degradation affecting cellulose triacetate films causing deacetylation of polymer chain is called “vinegar syndrome”. In this work are presented results of effect of ionizing radiation on photographic and cinematographic films. Selected films were characterized by FTIR-ATR spectroscopy and FEGSEM-EDS microscopy. Samples were irradiated by gamma rays with absorbed dose between 2 kGy and 200 kGy. Irradiated samples were analyzed by UV-vis spectrophotometry, FEGSEM, thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). Results showed that disinfection by gamma rays can be achieved safely applying radiation absorbed doses between 6 kGy and 10 kGy with no change or modification of main properties of the constitutive polymeric materials. Gamma rays due to the effect of crosslinking is presented as an alternative to treat films affected by “vinegar syndrome” applying absorbed dose of 50 kGy in order to increase shelf life of cultural heritage materials.pt_BR
dc.identifier.citationNAGAI, MARIA L.E.; SANTOS, PAULO S.; OTUBO, LARISSA; OLIVEIRA, MARIA J.A. de; VASQUEZ, PABLO A.S. Ionizing radiation for the preservation and conservation of photographic and cinematographic films. In: VASQUEZ, PABLO A.S. (ed.); NAGAI, MARIA L.E. (coord.). In: INTERNATIONAL SYMPOSIUM ON GAMMA IONIZATION: TECHNOLOGY FOR PRESERVATION OF CULTURAL HERITAGE, 1st, October 25, 2019, São Paulo, SP. <b>Abstract...</b> São Paulo: , 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/30914.
dc.identifier.orcid0000-0003-4168-1626pt_BR
dc.identifier.orcid0000-0002-2112-4139pt_BR
dc.identifier.orcidhttp://orcid.org/0000-0003-4168-1626
dc.identifier.orcidhttps://orcid.org/0000-0002-6078-229X
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/30914
dc.localSão Paulopt_BR
dc.local.eventoSão Paulo, SPpt_BR
dc.rightsopenAccesspt_BR
dc.titleIonizing radiation for the preservation and conservation of photographic and cinematographic filmspt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorPABLO ANTONIO VASQUEZ SALVADOR
ipen.autorMARIA JOSE ALVES DE OLIVEIRA
ipen.autorLARISSA OTUBO
ipen.autorPAULO DE SOUZA SANTOS
ipen.codigoautor3075
ipen.codigoautor3310
ipen.codigoautor9697
ipen.codigoautor4074
ipen.contributor.ipenauthorPABLO ANTONIO VASQUEZ SALVADOR
ipen.contributor.ipenauthorMARIA JOSE ALVES DE OLIVEIRA
ipen.contributor.ipenauthorLARISSA OTUBO
ipen.contributor.ipenauthorPAULO DE SOUZA SANTOS
ipen.date.recebimento20-03
ipen.event.datapadronizada2019pt_BR
ipen.identifier.ipendoc26551pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication47e9cd5a-dfda-4392-a887-42617e3c280f
relation.isAuthorOfPublicationdb19966e-6f74-43fc-84b1-c24c1d826e0c
relation.isAuthorOfPublicationd4213c42-72f0-4acc-956e-bdb70003cdee
relation.isAuthorOfPublication580f004e-82b5-446f-8853-cc50707b42fd
relation.isAuthorOfPublication.latestForDiscovery580f004e-82b5-446f-8853-cc50707b42fd
sigepi.autor.atividadeVASQUEZ, PABLO A.S.:3075:240:Npt_BR
sigepi.autor.atividadeOLIVEIRA, MARIA J.A. de:3310:750:Npt_BR
sigepi.autor.atividadeOTUBO, LARISSA:9697:711:Npt_BR
sigepi.autor.atividadeSANTOS, PAULO S.:4074:240:Npt_BR
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