FT-IR Study of the Molecular Orientation of Rubbed Polyimide Alignment Films

Abstract

Molecular orientations and surface morphology of mechanically rubbed polyimide films have been extensively studied by FT-IR, ellipsometry and atomic force microscope. In-plane and out-of-plane molecular orientations of rubbed polyimide films have been examined by angular dependences of polarized infrared transmission spectra. It has been confirmed that the polyimide chain inclination against the surface plane is induced by the rubbing. It has been shown that mapping of molecular orientation can be obtained by a grazing angle FT-IR microspectroscopy. © 1995, The Society of Photopolymer Science and Technology(SPST). All rights reserved.