Intermolecular interactions and liquid crystallinity of rigid linear and cyclic polymers in solution

静态和动态光散射，小角X-射线散射，溶液粘度，红外吸收，和圆二色性测量线性和圆形多糖衍生物的稀溶液，以确定在各种溶剂中的分子结构和分子间相互作用。 特别地，我们发现在某些聚合物-溶剂体系中，线性和环状聚合物具有不同的局部构象。 此外，在不同的溶剂中，观察到的结晶和近晶相。

Static and dynamic light scattering, small-angle X-ray scattering, solution viscosity, infrared absorption, and circular dichroism measurements were made for dilute solution of linear and circular polysaccharide derivatives to determine the molecular structure and intermolecular interacrtions in various solvents. Particularly, we found that the linear and cyclic polymers have different local conformation in some polymer-solvent systems. Furthermore, both cholesteric and smectic phases were observed in different solvents.