The behavior of polyester-based hyperbranched polymers in dilute solution

Abstract

Due to its molecular structure and large number of end groups, hyperbranched polymers and dendrimers have numerous specific properties that differ significantly to those of linear polymers of similar chemical composition. Consequently, in the past ten years, there has been an increasing number of publications in the literature devoted to the study of the influence of the molecular structure of these polymers on their properties in both the solid state and in solution [1,2,3]. The influence of the molar mass, i.e. the generation of hyperbranched polymers, HBP, of the polyester type on the values of the limiting viscosity number, cm3/g, and hydrodynamic radius, Rh, nm, of these macromolecules in various solvents at 25ºC, was studied. The obtained values of the limiting viscosity number, LVN, in various solvents were used to determine the solubility parameter of the investigated hyperbranched polymers, (J/m3)0.5.