A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2020 |
| Outros Autores: | , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
| Texto Completo: | http://hdl.handle.net/10362/105075 |
Resumo: | This work has received funding from the European Union's Horizon 2020 Research and Innovation Programme (H2020-NMBP-35-2017), grant agreement no 76081, Project NEMOSINE, "Innovative packaging solutions for storage and conservation of 20th century cultural heritage of artefacts based on cellulose derivatives; and Fundacao para a Ciencia e a Tecnologia, Ministerio da Ciencia Tecnologia e Ensino Superior (FCT/MCTES), Portugal, through doctoral programme CORES-PD/00253/2012, PB/BD/114412/2016, PD/BD/136678/2018 doctoral grant; and Associated Laboratory for Sustainable Chemistry - Clean Processes and Technologies - LAQV REQUIMTE which is financed by FCT/MCTES (UID/QUI/50006/2019). AAA is grateful for the post-doctoral fellowship from Fundacion Alfonso Martin Escudero. |
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A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopyCellulose acetateCellulose nitrateConservationDegradation mechanismsHeritage collectionsInfrared spectroscopyModern materialsConservationArchaeologyArchaeologyThis work has received funding from the European Union's Horizon 2020 Research and Innovation Programme (H2020-NMBP-35-2017), grant agreement no 76081, Project NEMOSINE, "Innovative packaging solutions for storage and conservation of 20th century cultural heritage of artefacts based on cellulose derivatives; and Fundacao para a Ciencia e a Tecnologia, Ministerio da Ciencia Tecnologia e Ensino Superior (FCT/MCTES), Portugal, through doctoral programme CORES-PD/00253/2012, PB/BD/114412/2016, PD/BD/136678/2018 doctoral grant; and Associated Laboratory for Sustainable Chemistry - Clean Processes and Technologies - LAQV REQUIMTE which is financed by FCT/MCTES (UID/QUI/50006/2019). AAA is grateful for the post-doctoral fellowship from Fundacion Alfonso Martin Escudero.Cellulose nitrate and acetate are materials at risk in heritage collections because it is not possible to predict the evolution of their conservation state over time. Knowing that the degree of substitution (DS) of these materials correlates with their state of conservation because the fundamental degradation mechanism is hydrolysis, in this work, DS was measured in historical objects and artworks. Infrared spectra were used to develop and optimize calibration curves for cellulose nitrate and acetate references that were next applied to calculate DS values of heritage objects. The extent of hydrolysis measured, with this tool, correlated well with the physical deterioration assessed through the sample hardness (Shore A) which was measured with a Durometer. Calibration curves were optimized in reference materials by Attenuated Total Reflectance (ATR-FTIR) and Micro Fourier Transform Infrared Spectroscopy (μFTIR). The DS values of the AC reference materials was previously calculated by nuclear magnetic resonance spectroscopy. The calibration curves were obtained plotting DS as a function of the ratio between a reference peak (which does not suffer relevant changes during degradation) and selected peaks that monitor the degradation for cellulose acetate and nitrate polymers (avoiding the interference of plasticizers). The reference peak for both was the COC stretching mode (νCOC). The probe peak was, for cellulose nitrate, the NO2 asymmetric stretching (νaNO2) and, for cellulose acetate, the OH stretching mode (νOH). This ratio was then applied to calculate DS values of historical materials, in good and poor conservation condition; in situ by ATR, and in micro-samples collected from artworks by μFTIR. This selection comprises cinematographic and photographic films dated from the 1890s to the 1960s, and contemporary works of art made with cellulose acetate sheets by Portuguese artist José Escada dated from the 1960s. Finally, by comparison with the original estimated DS values, we show how this tool permits to define the state of degradation of these complex polymer matrixes. Thus, establishing the quantification of the DS as a novel tool to monitor the degradation of cellulose ester plastics, contributing in this way for a sustainable preservation of an irreplaceable heritage.DQ - Departamento de QuímicaDCR - Departamento de Conservação e RestauroLAQV@REQUIMTERUNNunes, SofiaRamacciotti, FrancescaNeves, ArturAngelin, Eva MarisoleRamos, Ana MariaRoldão, ÉliaWallaszkovits, NadjaArmijo, Alfonso AlejoMelo, Maria João2020-10-02T22:23:44Z2020-04-062020-04-06T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/105075eng2050-7445PURE: 18351595https://doi.org/10.1186/s40494-020-00373-4info: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:RCAAP2024-03-11T04:50:30Zoai:run.unl.pt:10362/105075Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:40:24.371809Repositório 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 |
A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy |
| title |
A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy |
| spellingShingle |
A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy Nunes, Sofia Cellulose acetate Cellulose nitrate Conservation Degradation mechanisms Heritage collections Infrared spectroscopy Modern materials Conservation Archaeology Archaeology |
| title_short |
A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy |
| title_full |
A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy |
| title_fullStr |
A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy |
| title_full_unstemmed |
A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy |
| title_sort |
A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy |
| author |
Nunes, Sofia |
| author_facet |
Nunes, Sofia Ramacciotti, Francesca Neves, Artur Angelin, Eva Marisole Ramos, Ana Maria Roldão, Élia Wallaszkovits, Nadja Armijo, Alfonso Alejo Melo, Maria João |
| author_role |
author |
| author2 |
Ramacciotti, Francesca Neves, Artur Angelin, Eva Marisole Ramos, Ana Maria Roldão, Élia Wallaszkovits, Nadja Armijo, Alfonso Alejo Melo, Maria João |
| author2_role |
author author author author author author author author |
| dc.contributor.none.fl_str_mv |
DQ - Departamento de Química DCR - Departamento de Conservação e Restauro LAQV@REQUIMTE RUN |
| dc.contributor.author.fl_str_mv |
Nunes, Sofia Ramacciotti, Francesca Neves, Artur Angelin, Eva Marisole Ramos, Ana Maria Roldão, Élia Wallaszkovits, Nadja Armijo, Alfonso Alejo Melo, Maria João |
| dc.subject.por.fl_str_mv |
Cellulose acetate Cellulose nitrate Conservation Degradation mechanisms Heritage collections Infrared spectroscopy Modern materials Conservation Archaeology Archaeology |
| topic |
Cellulose acetate Cellulose nitrate Conservation Degradation mechanisms Heritage collections Infrared spectroscopy Modern materials Conservation Archaeology Archaeology |
| description |
This work has received funding from the European Union's Horizon 2020 Research and Innovation Programme (H2020-NMBP-35-2017), grant agreement no 76081, Project NEMOSINE, "Innovative packaging solutions for storage and conservation of 20th century cultural heritage of artefacts based on cellulose derivatives; and Fundacao para a Ciencia e a Tecnologia, Ministerio da Ciencia Tecnologia e Ensino Superior (FCT/MCTES), Portugal, through doctoral programme CORES-PD/00253/2012, PB/BD/114412/2016, PD/BD/136678/2018 doctoral grant; and Associated Laboratory for Sustainable Chemistry - Clean Processes and Technologies - LAQV REQUIMTE which is financed by FCT/MCTES (UID/QUI/50006/2019). AAA is grateful for the post-doctoral fellowship from Fundacion Alfonso Martin Escudero. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020-10-02T22:23:44Z 2020-04-06 2020-04-06T00:00:00Z |
| 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 |
http://hdl.handle.net/10362/105075 |
| url |
http://hdl.handle.net/10362/105075 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
2050-7445 PURE: 18351595 https://doi.org/10.1186/s40494-020-00373-4 |
| dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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