Plastic toy soldiers, a lost battle? – an analytical perspective

Detalhes bibliográficos
Autor(a) principal: Pereira, António
Data de Publicação: 2021
Outros Autores: Candeias, António, Cardoso, Ana, Mirão, José, Caldeira, Ana Teresa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://doi.org/10.14568/cp2020002
Resumo: The preservation and conservation of museum collections requires a detailed understanding of their constituent materials. The use of a wide variety of instrumental techniques can provide complementary data regarding the composition and structure of these materials. A set of plastic toy soldiers (mid 20th century) from the Oporto Military Museum (Museu Militar do Porto) exibited accelerated deterioration. To better understand this deterioration process, the authors used a multi-analytical approach. The micromorphological features of the objects were characterized with stereoscopic microscopy and VP-SEM-EDS, the polymer and its additives were identified with ATR-FTIR, and 1H and 13C NMR, respectively, and the crystalline degradation products were identified with micro-XRD. The polymer that composes the toys was identified as cellulose acetate, with triphenyl phosphate and dimethyl phthalate additives. A crystalline efflorescence of triphenyl phosphate was identified as a degradation product. This methodology showed to be adequate for a detailed characterization of plastic artefacts in museum environments.
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spelling Plastic toy soldiers, a lost battle? – an analytical perspectiveSoldadinhos de plástico, uma batalha perdida? – uma perspetiva analíticaArticlesThe preservation and conservation of museum collections requires a detailed understanding of their constituent materials. The use of a wide variety of instrumental techniques can provide complementary data regarding the composition and structure of these materials. A set of plastic toy soldiers (mid 20th century) from the Oporto Military Museum (Museu Militar do Porto) exibited accelerated deterioration. To better understand this deterioration process, the authors used a multi-analytical approach. The micromorphological features of the objects were characterized with stereoscopic microscopy and VP-SEM-EDS, the polymer and its additives were identified with ATR-FTIR, and 1H and 13C NMR, respectively, and the crystalline degradation products were identified with micro-XRD. The polymer that composes the toys was identified as cellulose acetate, with triphenyl phosphate and dimethyl phthalate additives. A crystalline efflorescence of triphenyl phosphate was identified as a degradation product. This methodology showed to be adequate for a detailed characterization of plastic artefacts in museum environments.A preservação e a conservação de coleções em museus requer o conhecimento dos seus materiais constituintes. O uso de variadas técnicas instrumentais pode fornecer resultados complementares sobre a composição e estrutura destes materiais. Um conjunto de soldadinhos de plástico (de meados do século XX) do Museu Militar do Porto apresentava um processo de deterioração acelerado. Para melhor compreender essa deterioração, os presentes autores utilizaram uma abordagem multi analítica. A micromorfologia dos objectos foi caracterizada através de microscopia estereoscópica e microscopia eletrónica de varrimento de pressão variável (VP-SEM-EDS), o polímero e seus aditivos foram identificados por espectroscopia de infravermelho com transformada de Fourier com reflexão total atenuada (ATR-FTIR) e ressonância magnética nuclear (1H e 13C RMN), respectivamente, e os produtos de degradação com estrutura cristalina foram identificados por microdifração de raios X (Micro-XRD). O polímero que contitui os soldadinhos foi identificado como acetato de celulose, tendo fosfato de trifenilo e ftalato de dimetilo como principais aditivos, e as eflorescências cristalinas foram idenficadas como fosfato de trifenilo. Esta metodologia mostrou-se adequada para uma caracterização detalhada de artefactos de plástico em ambiente museológico.ARP - Associação Profissional de Conservadores-Restauradores de Portugal2021-05-31T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://doi.org/10.14568/cp2020002eng2182-99421646-043XPereira, AntónioCandeias, AntónioCardoso, AnaMirão, JoséCaldeira, Ana Teresainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-20T11:11:18ZPortal AgregadorONG
dc.title.none.fl_str_mv Plastic toy soldiers, a lost battle? – an analytical perspective
Soldadinhos de plástico, uma batalha perdida? – uma perspetiva analítica
title Plastic toy soldiers, a lost battle? – an analytical perspective
spellingShingle Plastic toy soldiers, a lost battle? – an analytical perspective
Pereira, António
Articles
title_short Plastic toy soldiers, a lost battle? – an analytical perspective
title_full Plastic toy soldiers, a lost battle? – an analytical perspective
title_fullStr Plastic toy soldiers, a lost battle? – an analytical perspective
title_full_unstemmed Plastic toy soldiers, a lost battle? – an analytical perspective
title_sort Plastic toy soldiers, a lost battle? – an analytical perspective
author Pereira, António
author_facet Pereira, António
Candeias, António
Cardoso, Ana
Mirão, José
Caldeira, Ana Teresa
author_role author
author2 Candeias, António
Cardoso, Ana
Mirão, José
Caldeira, Ana Teresa
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Pereira, António
Candeias, António
Cardoso, Ana
Mirão, José
Caldeira, Ana Teresa
dc.subject.por.fl_str_mv Articles
topic Articles
description The preservation and conservation of museum collections requires a detailed understanding of their constituent materials. The use of a wide variety of instrumental techniques can provide complementary data regarding the composition and structure of these materials. A set of plastic toy soldiers (mid 20th century) from the Oporto Military Museum (Museu Militar do Porto) exibited accelerated deterioration. To better understand this deterioration process, the authors used a multi-analytical approach. The micromorphological features of the objects were characterized with stereoscopic microscopy and VP-SEM-EDS, the polymer and its additives were identified with ATR-FTIR, and 1H and 13C NMR, respectively, and the crystalline degradation products were identified with micro-XRD. The polymer that composes the toys was identified as cellulose acetate, with triphenyl phosphate and dimethyl phthalate additives. A crystalline efflorescence of triphenyl phosphate was identified as a degradation product. This methodology showed to be adequate for a detailed characterization of plastic artefacts in museum environments.
publishDate 2021
dc.date.none.fl_str_mv 2021-05-31T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://doi.org/10.14568/cp2020002
url https://doi.org/10.14568/cp2020002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2182-9942
1646-043X
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv ARP - Associação Profissional de Conservadores-Restauradores de Portugal
publisher.none.fl_str_mv ARP - Associação Profissional de Conservadores-Restauradores de Portugal
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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