Plastic toy soldiers, a lost battle? – an analytical perspective
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
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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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:RCAAP2022-09-20T11:11:18Zoai:ojs.revistas.rcaap.pt:article/21797Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:49:09.752623Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
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) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799130357142913024 |