Cellulose and is derivatives are semirigid chain polymers~([1]) and Ethyl-cyanoethyl cellulose [(E-CE)C] can form lyotropic liquid crystals in acrylic acid [AA]~([2]) and the cholesteric order can be frzen in by a rapid polmerization of the AA in the solution~([3]). The macromolecular cholesteric structure in the (E-CE)C/AA cholesteric liquid crystalline solutions is studyied by directly observing the morphology and structure of the (E-CE)C/polyacrylic acid [PAA] using electron and atomic force microscopy. A periodical lamellar structure is observed in ultra thin slices of the composites with cholesteric order by both transmission and scanning electron microscopy (TEM and SEM) and atomic force microscopy (AFM).
展开▼
