Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/3793
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Duarte, Ana Rita C. | - |
dc.contributor.author | Martins, Carlos | - |
dc.contributor.author | Coimbra, Patrícia | - |
dc.contributor.author | Gil, Maria H. M. | - |
dc.contributor.author | Sousa, Hermínio C. de | - |
dc.contributor.author | Duarte, Catarina M. M. | - |
dc.date.accessioned | 2008-08-29T15:26:30Z | - |
dc.date.available | 2008-08-29T15:26:30Z | - |
dc.date.issued | 2006 | en_US |
dc.identifier.citation | The Journal of Supercritical Fluids. 38:3 (2006) 392-398 | en_US |
dc.identifier.uri | https://hdl.handle.net/10316/3793 | - |
dc.description.abstract | 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. | en_US |
dc.description.uri | http://www.sciencedirect.com/science/article/B6VMF-4J2KXWM-1/1/e87cd695d3d306a3605c6df9c406fe74 | en_US |
dc.format.mimetype | aplication/PDF | en |
dc.language.iso | eng | eng |
dc.rights | openAccess | eng |
dc.subject | Sorption | en_US |
dc.subject | Diffusion | en_US |
dc.subject | Fick's law | en_US |
dc.subject | Biocompatible polymers | en_US |
dc.subject | Supercritical fluids | en_US |
dc.title | Sorption and diffusion of dense carbon dioxide in a biocompatible polymer | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1016/j.supflu.2005.12.002 | - |
item.fulltext | Com Texto completo | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0002-2629-7805 | - |
Appears in Collections: | FCTUC Eng.Química - Artigos em Revistas Internacionais |
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file107b07f292d141ce91fbc73d99ead493.pdf | 285.09 kB | Adobe PDF | View/Open |
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