Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions

Detalhes bibliográficos
Autor(a) principal: Mano, J. F.
Data de Publicação: 2004
Outros Autores: Reis, R. L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/3996
Resumo: Dynamic mechanical analysis (DMA) was used to investigate the solid-state rheological behaviour in a starch-based thermoplastic aimed to be used in different biomedical applications. The tested samples were processed by different injection moulding procedures. The dry samples were immersed in a simulated physiological solution and the relevant viscoelastic parameters were monitored against time. The decrease of stiffness due to swelling can be followed in real time, being less pronounced for the composite sample with hydroxyapatite (HA). The temperature control of the liquid bath was found to be very good. Frequency scans were also performed in wet conditions in samples previously immersed during different times, indicating that DMA is a suitable method to control in-vitro the changes on the viscoelastic properties of biomaterials during degradation.
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spelling Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditionsThermal analysisBiodegradableDynamic mechanical behaviourNatural polymersScience & TechnologyDynamic mechanical analysis (DMA) was used to investigate the solid-state rheological behaviour in a starch-based thermoplastic aimed to be used in different biomedical applications. The tested samples were processed by different injection moulding procedures. The dry samples were immersed in a simulated physiological solution and the relevant viscoelastic parameters were monitored against time. The decrease of stiffness due to swelling can be followed in real time, being less pronounced for the composite sample with hydroxyapatite (HA). The temperature control of the liquid bath was found to be very good. Frequency scans were also performed in wet conditions in samples previously immersed during different times, indicating that DMA is a suitable method to control in-vitro the changes on the viscoelastic properties of biomaterials during degradation.ElsevierUniversidade do MinhoMano, J. F.Reis, R. L.20042004-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/3996eng"Materials Science and Engineering : Part A". 370 : 1-2 (Apr. 2004) 321-325.0921-509310.1016/j.msea.2003.08.088info: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:RCAAP2023-07-21T11:55:38Zoai:repositorium.sdum.uminho.pt:1822/3996Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:45:10.901452Repositório 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 Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions
title Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions
spellingShingle Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions
Mano, J. F.
Thermal analysis
Biodegradable
Dynamic mechanical behaviour
Natural polymers
Science & Technology
title_short Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions
title_full Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions
title_fullStr Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions
title_full_unstemmed Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions
title_sort Viscoelastic monitoring of starch-based biomaterials in simulated physiological conditions
author Mano, J. F.
author_facet Mano, J. F.
Reis, R. L.
author_role author
author2 Reis, R. L.
author2_role author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Mano, J. F.
Reis, R. L.
dc.subject.por.fl_str_mv Thermal analysis
Biodegradable
Dynamic mechanical behaviour
Natural polymers
Science & Technology
topic Thermal analysis
Biodegradable
Dynamic mechanical behaviour
Natural polymers
Science & Technology
description Dynamic mechanical analysis (DMA) was used to investigate the solid-state rheological behaviour in a starch-based thermoplastic aimed to be used in different biomedical applications. The tested samples were processed by different injection moulding procedures. The dry samples were immersed in a simulated physiological solution and the relevant viscoelastic parameters were monitored against time. The decrease of stiffness due to swelling can be followed in real time, being less pronounced for the composite sample with hydroxyapatite (HA). The temperature control of the liquid bath was found to be very good. Frequency scans were also performed in wet conditions in samples previously immersed during different times, indicating that DMA is a suitable method to control in-vitro the changes on the viscoelastic properties of biomaterials during degradation.
publishDate 2004
dc.date.none.fl_str_mv 2004
2004-01-01T00:00:00Z
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/1822/3996
url http://hdl.handle.net/1822/3996
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Materials Science and Engineering : Part A". 370 : 1-2 (Apr. 2004) 321-325.
0921-5093
10.1016/j.msea.2003.08.088
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.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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