Synthesis and properties of hyperbranched copolymers based on perfluorinated germanium hydrides

Structural and conformational properties of hyperbranched copolymers based on perfluorinated germanium hydrides

“…A change in the sequence of activator loading into the monomers, namely, first, to a less active DG and, then, to PG (method A) or single stage loading of the activator into a mixture of monomers DG and PG (method B), makes it possible to synthesize HBPs with different topological parameters, such as the degree of branching, the distribution of branching points over the volume of a macromolecule, and the relative con tents of bi and trifunctional branching centers ( Fig. 1) [21]. EXPERIMENTAL Two series of hyperbranched copolymers (co PPG A and co PPG B) were investigated in this study; the technique of their synthesis was described in detail in [21].…”

“…In this study, the hydrodynamic and conforma tional properties of branched copolymers based on perfluorinated germanium hydrides of various struc tures (co PPGs) are considered. An important struc tural feature of these copolymers is that they contain rigid, short, and bulky spacers: -GeR 1 R 2 -C 6 F 4 - [21]. Hence, with disregard for the deformation of valence bonds, a change in the conformations of co PPG macromolecules is provided by rotation around para aromatic bonds.…”

“…1) [21]. EXPERIMENTAL Two series of hyperbranched copolymers (co PPG A and co PPG B) were investigated in this study; the technique of their synthesis was described in detail in [21]. The content of DG in the reaction mix ture, x DG , was varied in a wide range from 5 to 50 wt % with respect to PG.…”