Sorption and diffusion of dense carbon dioxide in a biocompatible polymer
Autor(a) principal: | |
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Data de Publicação: | 2006 |
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/10316/3793 https://doi.org/10.1016/j.supflu.2005.12.002 |
Resumo: | Mass sorption and diffusion coefficients in one acrylate biocompatible copolymer contacted with supercritical (sc) carbon dioxide are reported. Equilibrium solubility of dense carbon dioxide in poly(methylmethacrylate-co-ethylhexylacrylate-co-ethyleneglycoldimethacrylate) (P(MMA-EHA-EGDMA)) was studied by a gravimetric method in a temperature range from 308 to 323 K and a pressure range from 10.0 to 20.0 MPa. The cross-linked copolymer presented Fickian behavior and Fick's diffusion model was applied to determine the amount of carbon dioxide present and the diffusion coefficients. Diffusion coefficients for the sorption under supercritical conditions and desorption at ambient conditions were determined and compared. Samples of P(MMA-EHA-EGDMA) with different thickness were used for comparison of the maximum sorption degree. Polymerization conditions were also varied in order to evaluate the influence of the molecular weight of the copolymer in the CO2 sorption process. To investigate the possibility of impregnating this acrylate copolymer with an anti-inflammatory drug, a preliminary experiment was performed. |
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Sorption and diffusion of dense carbon dioxide in a biocompatible polymerSorptionDiffusionFick's lawBiocompatible polymersSupercritical fluidsMass sorption and diffusion coefficients in one acrylate biocompatible copolymer contacted with supercritical (sc) carbon dioxide are reported. Equilibrium solubility of dense carbon dioxide in poly(methylmethacrylate-co-ethylhexylacrylate-co-ethyleneglycoldimethacrylate) (P(MMA-EHA-EGDMA)) was studied by a gravimetric method in a temperature range from 308 to 323 K and a pressure range from 10.0 to 20.0 MPa. The cross-linked copolymer presented Fickian behavior and Fick's diffusion model was applied to determine the amount of carbon dioxide present and the diffusion coefficients. Diffusion coefficients for the sorption under supercritical conditions and desorption at ambient conditions were determined and compared. Samples of P(MMA-EHA-EGDMA) with different thickness were used for comparison of the maximum sorption degree. Polymerization conditions were also varied in order to evaluate the influence of the molecular weight of the copolymer in the CO2 sorption process. To investigate the possibility of impregnating this acrylate copolymer with an anti-inflammatory drug, a preliminary experiment was performed.http://www.sciencedirect.com/science/article/B6VMF-4J2KXWM-1/1/e87cd695d3d306a3605c6df9c406fe742006info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/3793http://hdl.handle.net/10316/3793https://doi.org/10.1016/j.supflu.2005.12.002engThe Journal of Supercritical Fluids. 38:3 (2006) 392-398Duarte, Ana Rita C.Martins, CarlosCoimbra, PatríciaGil, Maria H. M.Sousa, Hermínio C. deDuarte, Catarina M. M.info: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:RCAAP2020-11-06T16:59:19Zoai:estudogeral.uc.pt:10316/3793Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:59:20.428675Repositório 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 |
Sorption and diffusion of dense carbon dioxide in a biocompatible polymer |
title |
Sorption and diffusion of dense carbon dioxide in a biocompatible polymer |
spellingShingle |
Sorption and diffusion of dense carbon dioxide in a biocompatible polymer Duarte, Ana Rita C. Sorption Diffusion Fick's law Biocompatible polymers Supercritical fluids |
title_short |
Sorption and diffusion of dense carbon dioxide in a biocompatible polymer |
title_full |
Sorption and diffusion of dense carbon dioxide in a biocompatible polymer |
title_fullStr |
Sorption and diffusion of dense carbon dioxide in a biocompatible polymer |
title_full_unstemmed |
Sorption and diffusion of dense carbon dioxide in a biocompatible polymer |
title_sort |
Sorption and diffusion of dense carbon dioxide in a biocompatible polymer |
author |
Duarte, Ana Rita C. |
author_facet |
Duarte, Ana Rita C. Martins, Carlos Coimbra, Patrícia Gil, Maria H. M. Sousa, Hermínio C. de Duarte, Catarina M. M. |
author_role |
author |
author2 |
Martins, Carlos Coimbra, Patrícia Gil, Maria H. M. Sousa, Hermínio C. de Duarte, Catarina M. M. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Duarte, Ana Rita C. Martins, Carlos Coimbra, Patrícia Gil, Maria H. M. Sousa, Hermínio C. de Duarte, Catarina M. M. |
dc.subject.por.fl_str_mv |
Sorption Diffusion Fick's law Biocompatible polymers Supercritical fluids |
topic |
Sorption Diffusion Fick's law Biocompatible polymers Supercritical fluids |
description |
Mass sorption and diffusion coefficients in one acrylate biocompatible copolymer contacted with supercritical (sc) carbon dioxide are reported. Equilibrium solubility of dense carbon dioxide in poly(methylmethacrylate-co-ethylhexylacrylate-co-ethyleneglycoldimethacrylate) (P(MMA-EHA-EGDMA)) was studied by a gravimetric method in a temperature range from 308 to 323 K and a pressure range from 10.0 to 20.0 MPa. The cross-linked copolymer presented Fickian behavior and Fick's diffusion model was applied to determine the amount of carbon dioxide present and the diffusion coefficients. Diffusion coefficients for the sorption under supercritical conditions and desorption at ambient conditions were determined and compared. Samples of P(MMA-EHA-EGDMA) with different thickness were used for comparison of the maximum sorption degree. Polymerization conditions were also varied in order to evaluate the influence of the molecular weight of the copolymer in the CO2 sorption process. To investigate the possibility of impregnating this acrylate copolymer with an anti-inflammatory drug, a preliminary experiment was performed. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006 |
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/10316/3793 http://hdl.handle.net/10316/3793 https://doi.org/10.1016/j.supflu.2005.12.002 |
url |
http://hdl.handle.net/10316/3793 https://doi.org/10.1016/j.supflu.2005.12.002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
The Journal of Supercritical Fluids. 38:3 (2006) 392-398 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/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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