Polymers, comb-like poly branches

Thus, the fractal analysis methods were used above for treatment of comb-like poly(sodiumoxi) methylsylseskvioxanes behavior in solution. It has been shown that the intrinsic viscosity reduction at transition from a linear analog to a branched one is due to the sole factor, namely, to a macromolecule connectivity degree enhancement, characterized by spectral dimension. This conclusion is confirmed by a good correspondence of the experimental and calculated according to Mark-Kuhn-Houwink equation fiactal variant intrinsic viscosity values. It has been shown that qualitative transition of the stmcture of branched polymer macromolecular coil from a good solvent to 0-solvent can be reached by a solvent change. 

The authors [228, 236] synthesized polymers of the type of so-called molecular brushes-poly(sodiumoxi) methylsylseskvioxanes (PSMSO). Molecular brushes one names comb-like polynners with high density of grafted side chains. They found anomalous low values of solutions viscosity of molecular brushes PSMSO and on this basis supposed, that at side branch length growth the qualitative changes of polymer macromolecule in solution and block occurred [228,236,237], which consisted oftran-... 

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