Abstract
This article has the aim to perform a comparative analysis between a semi-aromatic polyimide (PI) and a fully aliphatic one, with focus on the dianhydride moiety effect on certain physical properties of interest in display applications. Molecular modeling proved that the distinct PI conformational features have implications on the polymer interaction with the nematic molecules. Optical studies indicate different levels of transparency as a function of the aromatic extent of the sample structure. For achievement of the nematic orientation on the PI layers, their surface is subjected to mechanical erosion. The characteristics of the created topography reveal the involvement of the type of dianhydride used in the PI synthesis. Wettability data show a relevant enhancement in the nematic adhesion work values after the surface rubbing of both PIs.
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