Abstract
We report here the synthesis and characterization of poly(amic ethyl ester) oligomers functionalized with trimethoxysilyl end-groups. The oligomers were prepared via the condensation of 1,1-bis(4-aminophenyl)-1-phenyl-2.2,2-trifluoroethane, diethyldichloromellitate and p-aminophenyltrimethoxysilane. The p-amino-phenyltrimethoxysilane was used to control both molecular weight and end-group functionality. These oligomers were thermally cured to form crosslinked networks. The resulting networks possesed T g in excess of 450°C and thermal decomposition temperatures in the proximity of 500°C. The formation of networks was confirmed by swelling studies. These oligomers offer an attractive processing alternative as low viscosity precursors to crosslinked polyimide networks.
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