Abstract
The miscibility of main-chain liquid crystalline polymer (LCP) with some amorphous polymers was investigated for the blends prepared by solution casting. It was found that LCP was miscible with styrene-acrylonitrile random copolymers (SAN) which have AN content from 4 to 7 (SAN4~7). Both blends of LCP with PS and with SAN19 were phase-separated via the spinodal decomposition. The immiscible blend system of LCP/SAN19 was applied to the scattered polarizing plate by controlling phase-separated morphology and orientation of LCP molecules, which were aligned parallel to the rubbing direction by applying magnetic field. For the miscible blend system of LCP/SAN6, the control of the birefringence was attempted and it was shown that the wavelength dispersion of birefringence became smaller than that of neat LCP. This result suggests the possibility to a new mono-layer retardation film which has larger birefringence in larger wavelength.
