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Políesteros alifáticos lineales amorfos para la fácil preparación de dispositivos elastoméricos sintonizables de
David A Olson1, Stephanie E A Gratton, Joseph M DeSimone
1Department of Chemistry, University of North Carolina at Chapel Hill, Venable Hall CB 3290, Chapel Hill, NC 27599-3290, USA.
Journal of the American Chemical Society
|October 13, 2006
Resumen
Los investigadores desarrollaron un método versátil para crear elastómeros amorfos y degradables con propiedades mecánicas y de degradación ajustables. Esta técnica permite la fabricación fácil de dispositivos de forma específica para diversas aplicaciones.
Área de la Ciencia:
- Química de Polímeros La Química de Polímeros es la química de los polímeros.
- Ciencia de los materiales Ciencia de los materiales.
- Ingeniería de Biomateriales Ingeniería de Biomateriales
Sus antecedentes:
- El desarrollo de elastómeros degradables con propiedades controlables es crucial para aplicaciones avanzadas.
- Los métodos existentes a menudo carecen de la versatilidad para ajustar las características mecánicas y las tasas de degradación simultáneamente.
- La fabricación de dispositivos complejos y de forma específica a partir de dichos materiales sigue siendo un desafío.
Objetivo del estudio:
- Investigar un método versátil para la preparación de elastómeros amorfos degradables.
- Para lograr propiedades mecánicas y de degradación sintonizables.
- Para permitir la fabricación fácil de dispositivos específicos de la forma.
Principales métodos:
- Preparación de prepolímeros amorfos y líquidos (poliéster éter) a través de la polimerización por condensación.
- El enlace transversal térmico de los prepolímeros para formar estructuras elastoméricas degradables.
- Fabricación de dispositivos utilizando técnicas tradicionales y modificadas de litografía de impresión.
Principales resultados:
- Sintetizó con éxito prepolímeros líquidos con composiciones sintonizables.
- Se logra el control de las propiedades mecánicas (módulo de Young: 0.0220 MPa) y las tasas de degradación (30 días a 6 meses).
- Fabricados dispositivos biológicamente aplicables con diversas topologías, lo que demuestra la versatilidad de fabricación.
Conclusiones:
- El método desarrollado ofrece una combinación única de facilidad de fabricación, velocidad y capacidad de ajuste de propiedades para elastómeros degradables.
- Este enfoque facilita la creación de dispositivos elastoméricos diseñados a medida para diversas aplicaciones.
- Los hallazgos representan un avance significativo en el campo de los materiales poliméricos degradables.
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