Sorption and diffusion of dense carbon dioxide in a biocompatible polymer

Detalhes bibliográficos
Autor(a) principal: Duarte, Ana Rita C.
Data de Publicação: 2006
Outros Autores: Martins, Carlos, Coimbra, Patrícia, Gil, Maria H. M., Sousa, Hermínio C. de, Duarte, Catarina M. M.
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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spelling 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
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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
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