Plastics in robots
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2022 |
| 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/10362/150355 |
Resumo: | Funding Information: The authors would like to thank Dr. Clarimma Sessa, of the Chair of Conservation-Restoration, Art Technology and Conservation Science at the TUM for her support with SEM-EDX investigations; Prof. Takuya Hashimoto of the Tokyo University of Science for sharing information about the robot SAYA; Dr. Frank Dittmann, Nicolas Lange and Susanne Grießbach, curators and conservator of the Deutsches Museum respectively, for the fruitful discussions on the decision-making-process regarding the preservation of SAYA. Publisher Copyright: © 2022, The Author(s). |
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Plastics in robotsa degradation study of a humanoid skin mask made of soft urethane elastomerATR-FTIREGA-MSHumanoid robotNatural agingPreventive conservationRaman microscopyStickinessTD/Py–GC/MSUrethane elastomer (PUR)YellowingConservationArchaeologyArchaeologyFunding Information: The authors would like to thank Dr. Clarimma Sessa, of the Chair of Conservation-Restoration, Art Technology and Conservation Science at the TUM for her support with SEM-EDX investigations; Prof. Takuya Hashimoto of the Tokyo University of Science for sharing information about the robot SAYA; Dr. Frank Dittmann, Nicolas Lange and Susanne Grießbach, curators and conservator of the Deutsches Museum respectively, for the fruitful discussions on the decision-making-process regarding the preservation of SAYA. Publisher Copyright: © 2022, The Author(s).Understanding the degradation of plastic materials is a big challenge for curators, conservators and conservation scientists in museums worldwide aiming to preserve their collections due to the variety of formulations of synthetic polymers and pigments. The conservation of polyurethane (PUR) based objects is challenging because they can suffer from extensive degradation. Particularly PUR elastomers can degrade shortly after their production, as occurred to the mask of the Japanese robot SAYA, which within 8 years suffered from two large tears, discoloration and stickiness. This research aims at studying the degradation phenomena of the androids’ synthetic skin. Better knowledge of the chemical composition of the mask and the chemical and physical decay will contribute to planning a suitable stabilization treatment. Within a multi-analytical approach, colorimetric and microscopic investigations highlighted discolored areas, which showed further color changes within a five months monitoring campaign, confirming the instability of the material likely due to ongoing degradation. Raman microscopy allowed the identification of Pigment White 6 (titanium dioxide TiO2) in the anatase form, known to promote the photosensitivity of PUR substrates towards ultraviolet (UV) light. Attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy identified the PUR composition of the mask, the presence of phthalates as plasticizers and suggested the formation of quinone chromophores in the polymer structure as a result of photo-oxidation, possibly responsible for the mask yellowing. Evolved gas analysis-mass spectrometry (EGA-MS) and double-shot-gas chromatography/mass spectrometry (TD/Py–GC/MS) analyses support the characterization of the formulation of the mask as being made of methylene diphenyl diisocyanate (MDI) PUR ether elastomer. Plasticizers in high concentration, mainly diisononyl phthalate (DINP) and bis(2-ethylhexyl)phthalate (DEHP), and the UV stabilizer Tinuvin 328 were also detected. In addition, the presence of styrene-acrylonitrile (SAN) could also contribute to the mask’s chemical instability. More amount of UV stabilizer and phthalates were detected at the surface (contributing to its stickiness) than in the inner core. The degradation of the mask results from the light susceptibility of MDI PUR ether and SAN, as well as the higher photochemical activity of anatase. The mask was transferred on to a mannequin and placed in the storage area to prevent light exposure and photo-oxidation. As loose edges had to be stabilized, tests were conducted and adhesive stripes glued with a PUR dispersion were selected for keeping the head’s shape. The novelty of this study is the implementation of conservation science on the study of androids with PUR elastomeric components in robotic collections, which are becoming increasingly popular in technical museums, however still seldomly studied.LAQV@REQUIMTEDCR - Departamento de Conservação e RestauroRUNMicheluz, AnnaAngelin, Eva MariasoleSawitzki, JuliaPamplona, Marisa2023-03-10T22:54:07Z20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article17application/pdfhttp://hdl.handle.net/10362/150355eng2050-7445PURE: 55241439https://doi.org/10.1186/s40494-021-00636-8info: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:RCAAP2024-03-11T05:32:20Zoai:run.unl.pt:10362/150355Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:54:04.167143Repositório 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 |
Plastics in robots a degradation study of a humanoid skin mask made of soft urethane elastomer |
| title |
Plastics in robots |
| spellingShingle |
Plastics in robots Micheluz, Anna ATR-FTIR EGA-MS Humanoid robot Natural aging Preventive conservation Raman microscopy Stickiness TD/Py–GC/MS Urethane elastomer (PUR) Yellowing Conservation Archaeology Archaeology |
| title_short |
Plastics in robots |
| title_full |
Plastics in robots |
| title_fullStr |
Plastics in robots |
| title_full_unstemmed |
Plastics in robots |
| title_sort |
Plastics in robots |
| author |
Micheluz, Anna |
| author_facet |
Micheluz, Anna Angelin, Eva Mariasole Sawitzki, Julia Pamplona, Marisa |
| author_role |
author |
| author2 |
Angelin, Eva Mariasole Sawitzki, Julia Pamplona, Marisa |
| author2_role |
author author author |
| dc.contributor.none.fl_str_mv |
LAQV@REQUIMTE DCR - Departamento de Conservação e Restauro RUN |
| dc.contributor.author.fl_str_mv |
Micheluz, Anna Angelin, Eva Mariasole Sawitzki, Julia Pamplona, Marisa |
| dc.subject.por.fl_str_mv |
ATR-FTIR EGA-MS Humanoid robot Natural aging Preventive conservation Raman microscopy Stickiness TD/Py–GC/MS Urethane elastomer (PUR) Yellowing Conservation Archaeology Archaeology |
| topic |
ATR-FTIR EGA-MS Humanoid robot Natural aging Preventive conservation Raman microscopy Stickiness TD/Py–GC/MS Urethane elastomer (PUR) Yellowing Conservation Archaeology Archaeology |
| description |
Funding Information: The authors would like to thank Dr. Clarimma Sessa, of the Chair of Conservation-Restoration, Art Technology and Conservation Science at the TUM for her support with SEM-EDX investigations; Prof. Takuya Hashimoto of the Tokyo University of Science for sharing information about the robot SAYA; Dr. Frank Dittmann, Nicolas Lange and Susanne Grießbach, curators and conservator of the Deutsches Museum respectively, for the fruitful discussions on the decision-making-process regarding the preservation of SAYA. Publisher Copyright: © 2022, The Author(s). |
| publishDate |
2022 |
| dc.date.none.fl_str_mv |
2022 2022-01-01T00:00:00Z 2023-03-10T22:54:07Z |
| 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/10362/150355 |
| url |
http://hdl.handle.net/10362/150355 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
2050-7445 PURE: 55241439 https://doi.org/10.1186/s40494-021-00636-8 |
| dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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17 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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