Oxygen transport through methacrylate-based hydrogels with potential biological capability
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Scholar |
Otros documentos de la autoría: Compañ, Vicente; San Román, Julio; Riande, Evaristo; Smith Sorensen, T.; Levenfeld, B.; Andrio, Andreu
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
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http://dx.doi.org/10.1016/0142-9612(96)84945-3 |
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Título
Oxygen transport through methacrylate-based hydrogels with potential biological capabilityAutoría
Fecha de publicación
1996Editor
ElsevierISSN
0142-9612; 1878-5905Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/0142961296849453Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
The permeability to oxygen of hydrogels prepared from copolymers of 2-hydroxymethyl methacrylate and p-methacryloxyl-oxyacetanilide have been studied by using an oxygen electrode in combination with a permeometer. The ... [+]
The permeability to oxygen of hydrogels prepared from copolymers of 2-hydroxymethyl methacrylate and p-methacryloxyl-oxyacetanilide have been studied by using an oxygen electrode in combination with a permeometer. The transmissibility Full-size image (<1 K) and the permeability Dk (where D, k and L are, respectively, the diffusion coefficient, the Henry constant and the thickness of the hydrogel) are measured by a combination of steady state and transitory state measurements. Both transport coefficients increase with the water content, which in turn depends on the copolymer composition. The values of these quantities tend toward a limiting value for water-saturated hydrogels. The ratio of the characteristic volume for diffusion of the oxygen molecule to the free volume of water per mole water is found to be in the vicinity of 0.10, and this value increases slightly as the fraction of the hydrophilic comonomer in the hydrogel increases. A detailed comparison of the biogels studied with six commercial contact lenses has also been performed. [-]
Publicado en
Biomoterials 17 (1996) 1243-1249Derechos de acceso
© 1996 Elsevier Science Limited Printed in Great Britain. All rights reserved
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- FCA_Articles [507]