Nano-scaled ordering in highly branched regular polymer structures

General features of the structural moieties spatial arrangement were studied by a number of experimental techniques for a representative set of a novel class of dendritic macromolecules: regular polyorganosiloxane dendrimers, polyallylcarbosilane dendrimers with functional groups, polyallylcarbosilane hyperbranched macromolecules, hyperbranched polyethoxysiloxane macromolecules on the way of their transformation towards molecular form of silica, hyperbranched structures based on the products of hydrolysis of Ti(OBU)(4) and prepared by a sol-gel method. Dendrimers in solution seemed like ball-shaped uniform particles with the averaged volume density close to their bulk density, whereas hyperbranched macromolecules had much less value of the averaged density. A rather general multilevel structural hierarchy was revealed and justified for the studied hyperbranched macromolecules of dendritic structure, namely: an ultra-dispersed subparticle - a fractal cluster - a single fractal "macromolecule-particle". The peculiarities of a spatial arrangement of the highly branched regular and irregular dendritic macromolecules were tightly related with the results of the molecular dynamic experiments and with the experimental spectra of their molecular mobility. The comparison was made with the data obtained for dendritic macromolecules of other than studied chemical structures and published elsewhere.