| This thesis describes the research carried out on preparation and characterization of two types of diacetylene polymers.; The first chapter describes polymers with a flexible backbone, which have been prepared from dipropargyl ether of bisphenol A. These macromolecules assume different conformations by rotating around the C-C or C-O single bounds of their main chain. The formula of poly(dipropargyl ether of bisphenol A) is as follows:(DIAGRAM, TABLE OR GRAPHIC OMITTED...PLEASE SEE MAI); The second chapter describes the research on hair-type substituted rigid rod polymers. These polymers have inflexible backbones, and exist in one rigid rod conformation only. Several new rigid rod polymers have been prepared. The general formula for this type of polymer is illustrated below:(DIAGRAM, TABLE OR GRAPHIC OMITTED...PLEASE SEE MAI)... |