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La fosforilcolina introduce una doble actividad en los ionomeros biomiméticos
Fredrik Nederberg1, Tim Bowden, Bo Nilsson
1Department of Materials Chemistry, Polymer Chemistry, Box 538, Uppsala University, S-751 21 Uppsala, Sweden.
Journal of the American Chemical Society
|November 26, 2004
Resumen
Este estudio introduce un nuevo iónomo funcionalizado con fosforilcolina (PC) y policarbonato de trietileno (PTMC). Este material ofrece elasticidad a medida y una mejor hemocompatibilidad para aplicaciones médicas biodegradables.
Área de la Ciencia:
- Ciencia de los Biomateriales Ciencia de los Biomateriales.
- Química de Polímeros La Química de Polímeros es la química de los polímeros.
- Química de las superficies.
Sus antecedentes:
- El carbonato de poli (PTMC) es un polímero biodegradable con malas propiedades mecánicas.
- El desarrollo de materiales basados en PTMC con mejor rendimiento mecánico y biocompatibilidad es crucial para aplicaciones in vivo.
Objetivo del estudio:
- Para sintetizar y caracterizar un nuevo bifuncional fosforilo colina (PC) funcionalizado PTMC ionomer (PC-PTMC-PC).
- Investigar la doble actividad de los grupos de PC en la adaptación de las propiedades mecánicas y la hemocompatibilidad superficial.
Principales métodos:
- Síntesis del ionómero PC-PTMC-PC.
- Caracterización de las propiedades mecánicas a granel (módulo elástico).
- Análisis de la superficie para determinar el enriquecimiento de PC.
Principales resultados:
- El ionomero PC-PTMC-PC formó dominios zwitteriónicos, creando enlaces cruzados físicos y mejorando la firmeza de la película.
- El ionómero exhibió un bajo módulo elástico en comparación con el precursor PTMC pegajoso.
- El enriquecimiento de los grupos de PC en la superficie de la película mejoró la hemocompatibilidad.
Conclusiones:
- Los ionomeros PTMC funcionalizados con PC se pueden adaptar para mejorar el rendimiento mecánico y la hemocompatibilidad.
- La doble actividad de los grupos de PC ofrece una estrategia para el desarrollo de materiales biodegradables avanzados para usos biomédicos.
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