FUNCTIONALITY OF THE BETA(1,4) GLYCOSIDIC LINKAGE IN POLYSACCHARIDES

The equatorial configuration of the beta(1,4)-glycosidic bond predesti nes a stretched chain conformation. These topological characteristics form the basis for laterally aggregated supramolecular structures in t he solid state as well as in the concentrated solution regime. Partial ly substituted derivatives develop water solubility,but the dissolutio n process stops at a certain colloidal level. The aggregates show stru ctural properties which are best described by a fringed micelle. These objects are built up of laterally aggregated chains forming a stem an d have a peripheral shell of dangling chain sections. The striking dyn amic properties indicate no segment interpenetration, and the particle s lose gradually their shell mobility as the overlap concentration is exceeded.