Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation

Abstract Preserving culture heritage cellulose acetate-based historical films is a challenge due to the long-term instability of these complex materials and a lack of prediction models that can guide conservation strategies for each particular film. In this work, a cellulose acetate degradation mode...

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Autores principales:	Abeer Al Mohtar, Moisés L. Pinto, Artur Neves, Sofia Nunes, Daniele Zappi, Gabriele Varani, Ana Maria Ramos, Maria João Melo, Nadja Wallaszkovits, Juan Ignacio Lahoz Rodrigo, Kerstin Herlt, João Lopes
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f65b1e5a507441678f443882eed38f65
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spelling	oai:doaj.org-article:f65b1e5a507441678f443882eed38f652021-12-02T18:50:47ZDecision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation10.1038/s41598-021-95373-02045-2322https://doaj.org/article/f65b1e5a507441678f443882eed38f652021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95373-0https://doaj.org/toc/2045-2322Abstract Preserving culture heritage cellulose acetate-based historical films is a challenge due to the long-term instability of these complex materials and a lack of prediction models that can guide conservation strategies for each particular film. In this work, a cellulose acetate degradation model is proposed as the basis for the selection of appropriate strategies for storage and conservation for each specimen, considering its specific information. Due to the formulation complexity and diversity of cellulose acetate-based films produced over the decades, we hereby propose a hybrid modeling approach to describe the films degradation process. The problem is addressed by a hybrid model that uses as a backbone a first-principles based model to describe the degradation kinetics of the pure cellulose diacetate polymer. The mechanistic model was successfully adapted to fit experimental data from accelerated aging of plasticized films. The hybrid model considers then the specificity of each historical film via the development of two chemometric models. These models resource on gas release data, namely acetic acid, and descriptors of the films (manufacturing date, AD-strip value and film type) to assess the current polymer degradation state and estimate the increase in the degradation rate. These estimations are then conjugated with storage conditions (e.g., temperature and relative humidity, presence of adsorbent in the film’s box) and used to feed the mechanistic model to provide the required time degradation simulations. The developed chemometric models provided predictions with accuracy more than 87%. We have found that the storage archive as well as the manufacturing company are not determining factors for conservation but rather the manufacturing date, off gas data as well as the film type. In summary, this hybrid modeling was able to develop a practical tool for conservators to assess films conservation state and to design storage and conservation policies that are best suited for each cultural heritage film.Abeer Al MohtarMoisés L. PintoArtur NevesSofia NunesDaniele ZappiGabriele VaraniAna Maria RamosMaria João MeloNadja WallaszkovitsJuan Ignacio Lahoz RodrigoKerstin HerltJoão LopesNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Abeer Al Mohtar Moisés L. Pinto Artur Neves Sofia Nunes Daniele Zappi Gabriele Varani Ana Maria Ramos Maria João Melo Nadja Wallaszkovits Juan Ignacio Lahoz Rodrigo Kerstin Herlt João Lopes Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation
description	Abstract Preserving culture heritage cellulose acetate-based historical films is a challenge due to the long-term instability of these complex materials and a lack of prediction models that can guide conservation strategies for each particular film. In this work, a cellulose acetate degradation model is proposed as the basis for the selection of appropriate strategies for storage and conservation for each specimen, considering its specific information. Due to the formulation complexity and diversity of cellulose acetate-based films produced over the decades, we hereby propose a hybrid modeling approach to describe the films degradation process. The problem is addressed by a hybrid model that uses as a backbone a first-principles based model to describe the degradation kinetics of the pure cellulose diacetate polymer. The mechanistic model was successfully adapted to fit experimental data from accelerated aging of plasticized films. The hybrid model considers then the specificity of each historical film via the development of two chemometric models. These models resource on gas release data, namely acetic acid, and descriptors of the films (manufacturing date, AD-strip value and film type) to assess the current polymer degradation state and estimate the increase in the degradation rate. These estimations are then conjugated with storage conditions (e.g., temperature and relative humidity, presence of adsorbent in the film’s box) and used to feed the mechanistic model to provide the required time degradation simulations. The developed chemometric models provided predictions with accuracy more than 87%. We have found that the storage archive as well as the manufacturing company are not determining factors for conservation but rather the manufacturing date, off gas data as well as the film type. In summary, this hybrid modeling was able to develop a practical tool for conservators to assess films conservation state and to design storage and conservation policies that are best suited for each cultural heritage film.
format	article
author	Abeer Al Mohtar Moisés L. Pinto Artur Neves Sofia Nunes Daniele Zappi Gabriele Varani Ana Maria Ramos Maria João Melo Nadja Wallaszkovits Juan Ignacio Lahoz Rodrigo Kerstin Herlt João Lopes
author_facet	Abeer Al Mohtar Moisés L. Pinto Artur Neves Sofia Nunes Daniele Zappi Gabriele Varani Ana Maria Ramos Maria João Melo Nadja Wallaszkovits Juan Ignacio Lahoz Rodrigo Kerstin Herlt João Lopes
author_sort	Abeer Al Mohtar
title	Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation
title_short	Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation
title_full	Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation
title_fullStr	Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation
title_full_unstemmed	Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation
title_sort	decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f65b1e5a507441678f443882eed38f65
work_keys_str_mv	AT abeeralmohtar decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT moiseslpinto decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT arturneves decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT sofianunes decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT danielezappi decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT gabrielevarani decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT anamariaramos decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT mariajoaomelo decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT nadjawallaszkovits decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT juanignaciolahozrodrigo decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT kerstinherlt decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation AT joaolopes decisionmakingbasedonhybridmodelingapproachappliedtocelluloseacetatebasedhistoricalfilmsconservation
_version_	1718377541289377792

Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation

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