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Copolimerización alterna de óxido de limoneno y dióxido de carbono
Christopher M Byrne1, Scott D Allen, Emil B Lobkovsky
1Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853, USA.
Journal of the American Chemical Society
|September 16, 2004
Resumen
Este estudio informa de la copolimización del óxido de limoneno y el CO2 utilizando catalizadores de zinc. El proceso produce policarbonato regioregular de alta pureza con un peso molecular controlado.
Área de la Ciencia:
- Química de Polímeros La química de los polímeros es la química de los polímeros.
- Catálisis organometálica por catálisis orgánica.
- Química verde es la química verde.
Sus antecedentes:
- El óxido de limoneno es un monómero de epóxido de base biológica.
- La utilización de dióxido de carbono en la síntesis de polímeros es un área de investigación activa.
- El desarrollo de catalizadores eficientes para la copolimización de CO2 es crucial.
Objetivo del estudio:
- Para informar la copolimización alterna de óxido de limoneno y CO2.
- Para investigar la eficacia de los catalizadores de acetato de zinc beta-diiminado.
- Para caracterizar las propiedades resultantes del policarbonato.
Principales métodos:
- Reacción de copolimización alterna bajo presión de CO2.
- Se utiliza el óxido de (R) o (S) limoneno como monómero de epóxido.
- Empleó acetato de zinc beta-diiminado como catalizador.
Principales resultados:
- Alta selectividad para el isómero trans del policarbonato.
- Producción de policarbonato regioregular con >99% de enlaces de carbonato.
- Se logró una distribución estrecha del peso molecular.
Conclusiones:
- Los catalizadores de acetato de zinc beta-diiminado son efectivos para la copolimización de óxido de limoneno y CO2.
- La reacción produce policarbonato regioregular de alta pureza.
- La actividad del catalizador es consistente con las proporciones de epoxido a zinc.
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