| Summary: | 碩士 === 國立中山大學 === 材料科學研究所 === 89 === Different monomeric diols, with a central rigid FD unit connected with two aliphatic chains of
various length, were prepared to react with aromatic mesogenic triad, TOBC. In this manner,
thermotropic polyesters with possible low thermal transition temperatures (including Tmand Ti) and high solubility in organic solvent can be
generated in view of the non-linear polymeric chain imposed by the rigid, bent FD moieties.
In addition to the effect of the aliphatic chain length, polyesters of different molecular weight
will be obtained by different synthesis approach (or fractionation of the resulting polyester
product) and therefore, the influence of molecular weight on liquid crystalline properties
can be evaluated.
|
|---|
