Thermorheological properties of self-assembled dibenzylidene sorbitol structures in various polymer matrices: Determination and prediction of characteristic temperatures

Abstract

Self-assembling of low molecular mass molecules based on a sugar derivative, namely dibenzylidene sorbitol, was studied in different polymeric matrices experimentally. The characteristic temperature at which the supramolecular organization of these materials sets in was determined by rheological means. The investigations revealed a crucial role of interactions between the structure forming agent and the polymer matrix. An equation was derived which correlates the characteristic temperature at which the structure formation sets in with the strength of enthalpic interactions expressed by the Hildebrand solubility parameter. The agreement between experimental data and calculations is satisfactory. Based on our experiments and calculations we are able to formulate necessary criteria for self-assembly in order to predict the behavior of unknown systems.