Abstract
Ethyl-cyanoethyl cellulose [(E-CE)C]/polycrylic acid (PAA) composites with cholesteric order were prepared by in situ polymerization and it was found that the high speed of polymerization was very important to suppress the phase separation in polymerization and retain the cholesteric order in composites. Homogeneous composites with single Tg were prepared by photopolymerization and thermally initiating polymerization gave the composite with partly destroyed cholesteric order and two Tgs. The layers of ordered polymer chains in cholesteric phases inclined during polymerization and the inclination of molecular layers decreased with increasing viscosity of the solution before polymerization.
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