Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/141569 |
Resumo: | Poly(vinyl acetate) based emulsions were used amongst artists in the 20th century as a binding medium. Vinyl emulsions were cheaper but considered of lesser quality than their better- known counterpart – acrylics, and thus were less used and less studied. As such, there is still a lot to unravel in what concerns their long-term behaviour. The central question addressed in this work, which is inserted within the goals of the research project Plastic Paints in Art: the impact of manufacturing processes on their long-term stability, is the impact of different formulations on the long-term stability of vinyl acetate-based emulsions. Immediate and complete information regarding the use of different additives and their impact is not available for synthetic paints. To complete this information gap, an ageing study with several emulsions based on different plasticizers was conducted. The emulsions in film form suffered accelerated ageing (Xenon-arc light source, =300nm) for 4000hours at and their optical, physical, and chemical changes were followed through a multi-analytical approach. A chronology for the introduction of plasticizers based on historical sources is also presented. PVAc as a homopolymer remained stable after the accelerated ageing, which was something that did not happen for some of the emulsions. It was possible to conclude that different plasticizers, co-monomers, and the quantity in which they are present, influence the emulsions drastically. Ângelo de Sousa, a Portuguese artist who used vinyl paints throughout the 20th century, is presented as a case study. Ângelos private collection was explored, and relationships between the information in the paintings inventory and paintings record were established. Microsamples from selected paintings were analyzed via ATR-FTIR to confirm the nature of the binder. Finally, two paintings with signs of microbial degradation were studied and, within the CleanART- Innovative methodology to clean fungal stains from paper documents and artworks research project, an innovative green technology of hydrogels based on an active principle derived from ionic liquids was tested showing promising results for the removal of fungal stains. |
id |
RCAP_5aeffc4a80fbd1a3aa279bb0d0368ee4 |
---|---|
oai_identifier_str |
oai:run.unl.pt:10362/141569 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s PaintingsPoly(vinyl acetate)Ângelo de Sousavinyl emulsions formulationsageing studyionic liquidshydrogelsDomínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e TecnologiasPoly(vinyl acetate) based emulsions were used amongst artists in the 20th century as a binding medium. Vinyl emulsions were cheaper but considered of lesser quality than their better- known counterpart – acrylics, and thus were less used and less studied. As such, there is still a lot to unravel in what concerns their long-term behaviour. The central question addressed in this work, which is inserted within the goals of the research project Plastic Paints in Art: the impact of manufacturing processes on their long-term stability, is the impact of different formulations on the long-term stability of vinyl acetate-based emulsions. Immediate and complete information regarding the use of different additives and their impact is not available for synthetic paints. To complete this information gap, an ageing study with several emulsions based on different plasticizers was conducted. The emulsions in film form suffered accelerated ageing (Xenon-arc light source, =300nm) for 4000hours at and their optical, physical, and chemical changes were followed through a multi-analytical approach. A chronology for the introduction of plasticizers based on historical sources is also presented. PVAc as a homopolymer remained stable after the accelerated ageing, which was something that did not happen for some of the emulsions. It was possible to conclude that different plasticizers, co-monomers, and the quantity in which they are present, influence the emulsions drastically. Ângelo de Sousa, a Portuguese artist who used vinyl paints throughout the 20th century, is presented as a case study. Ângelos private collection was explored, and relationships between the information in the paintings inventory and paintings record were established. Microsamples from selected paintings were analyzed via ATR-FTIR to confirm the nature of the binder. Finally, two paintings with signs of microbial degradation were studied and, within the CleanART- Innovative methodology to clean fungal stains from paper documents and artworks research project, an innovative green technology of hydrogels based on an active principle derived from ionic liquids was tested showing promising results for the removal of fungal stains.Ao longo do século XX, emulsões aquosas à base de poli(acetato de vinilo) foram utilizadas por artistas como meio ligante. Mais baratas, mas de menor qualidade do que as emulsões acrílicas, as emulsões vinílicas foram, porém, menos usadas e, também, menos estudadas, sendo, atualmente, oportuno investigar o seu estado de conservação. A questão principal subjacente ao presente trabalho, e que faz parte dos objetivos do projeto de investigação Plastic Paints in Art: the impact of manufacturing processes on their long-term stability, é determinar o impacto que diferentes formulações têm na estabilidade a longo prazo das emulsões vinílicas. Informação acessível e completa sobre o uso de diferentes aditivos e o seu impacto, não está imediatamente disponível. De modo a colmatar esta falha de informação, foi desenvolvido um estudo de envelhecimento acelerado com várias emulsões de diferentes formulações. Estas emulsões foram envelhecidas de forma acelerada por 4000 horas a =300nm, e as mudanças nas suas propriedades óticas, físicas e químicas foram seguidas através de uma abordagem multi-analítica. Uma cronologia para a introdução de plastificantes com base em fontes históricas, foi igualmente estabelecida. Conseguiu-se verificar que o PVAc enquanto homopolímero, se mantém estável durante o envelhecimento, o que não se verifica para algumas emulsões. Foi possível, deste modo, concluir que diferentes plastificantes e co-monómeros, e a quantidade em que estão presentes, influenciam o comportamento das emulsões de forma drástica. Ângelo de Sousa, um artista português que utilizou tintas vinílicas no século XX, constituiu o caso de estudo. A sua coleção privada foi analisada, estabelecendo-se relações entre a informação presente no inventário e nas fichas de obra. Microamostras de obras selecionadas foram analisadas por ATR-FTIR, por forma a confirmar o meio ligante. Finalmente, duas pinturas, com sinais de biodeterioração, foram selecionadas e, no âmbito do projeto CleanART- Innovative methodology to clean fungal stains from paper documents and artworks, uma nova tecnologia verde de hidrogéis à base de um princípio ativo derivado de líquidos iónicos foi testada, apresentando resultados promissores para a remoção de manchas de fungos.Grilo, JoanaSá, SusanaRUNViana, Carolina dos Reis2022-07-08T14:42:07Z2022-022022-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/141569enginfo: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:RCAAP2024-03-11T05:18:58Zoai:run.unl.pt:10362/141569Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:50:02.331996Repositório 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 |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings |
title |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings |
spellingShingle |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings Viana, Carolina dos Reis Poly(vinyl acetate) Ângelo de Sousa vinyl emulsions formulations ageing study ionic liquids hydrogels Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
title_short |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings |
title_full |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings |
title_fullStr |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings |
title_full_unstemmed |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings |
title_sort |
Are All Vinyl Paints The Same? The Impact Of Paint Formulations On Their Stability And The State Of Conservation Of Ângelo De Sousa`s Paintings |
author |
Viana, Carolina dos Reis |
author_facet |
Viana, Carolina dos Reis |
author_role |
author |
dc.contributor.none.fl_str_mv |
Grilo, Joana Sá, Susana RUN |
dc.contributor.author.fl_str_mv |
Viana, Carolina dos Reis |
dc.subject.por.fl_str_mv |
Poly(vinyl acetate) Ângelo de Sousa vinyl emulsions formulations ageing study ionic liquids hydrogels Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
topic |
Poly(vinyl acetate) Ângelo de Sousa vinyl emulsions formulations ageing study ionic liquids hydrogels Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
description |
Poly(vinyl acetate) based emulsions were used amongst artists in the 20th century as a binding medium. Vinyl emulsions were cheaper but considered of lesser quality than their better- known counterpart – acrylics, and thus were less used and less studied. As such, there is still a lot to unravel in what concerns their long-term behaviour. The central question addressed in this work, which is inserted within the goals of the research project Plastic Paints in Art: the impact of manufacturing processes on their long-term stability, is the impact of different formulations on the long-term stability of vinyl acetate-based emulsions. Immediate and complete information regarding the use of different additives and their impact is not available for synthetic paints. To complete this information gap, an ageing study with several emulsions based on different plasticizers was conducted. The emulsions in film form suffered accelerated ageing (Xenon-arc light source, =300nm) for 4000hours at and their optical, physical, and chemical changes were followed through a multi-analytical approach. A chronology for the introduction of plasticizers based on historical sources is also presented. PVAc as a homopolymer remained stable after the accelerated ageing, which was something that did not happen for some of the emulsions. It was possible to conclude that different plasticizers, co-monomers, and the quantity in which they are present, influence the emulsions drastically. Ângelo de Sousa, a Portuguese artist who used vinyl paints throughout the 20th century, is presented as a case study. Ângelos private collection was explored, and relationships between the information in the paintings inventory and paintings record were established. Microsamples from selected paintings were analyzed via ATR-FTIR to confirm the nature of the binder. Finally, two paintings with signs of microbial degradation were studied and, within the CleanART- Innovative methodology to clean fungal stains from paper documents and artworks research project, an innovative green technology of hydrogels based on an active principle derived from ionic liquids was tested showing promising results for the removal of fungal stains. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-07-08T14:42:07Z 2022-02 2022-02-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/141569 |
url |
http://hdl.handle.net/10362/141569 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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 |
|
_version_ |
1799138097963728896 |