Di-bloque PS-(PB-POSS) Copolímero

Los copolímeros POSS son sintetizados con el objetivo de formar compuestos con estructuras nanoestructurales.


Objetivo

El objetivo de la modificación de este copolímero es formar estructuras nanométricas de forma ordenada y controlada. Las estructuras nanométricas tienen propiedades eléctricas, de superficie y mecánicas diferentes a los compuestos de escala micrométrica.

Síntesis del Di-bloque PS-(PB-POSS)

La síntesis de este polímero se realiza por medio de la polirreacción de PS-co-1,2 PB en presencia de tolueno tratado con divinil-tetrametildisiloxano en presencia de platino. De esta manera se consigue un polímero de injerto PS-(PB-POSS) según:


La reacción puede caracterizarse por medio de tintura con OsO4 o RuO4 y difracción de electrones.

La modificación por medio de esta técnica permite formar nuevos materiales con características de resistencias a la torsión, tracción, creep diferentes o mejores que los polímeros sin estructura.

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