Polymer chain structure Kuhn length

These polymers have been synthesized on the basis of polysiloxane macromolecules with a double chain structure and aromatic and aliphatic side groups " ) (Fig. 2). However, the length of the Kuhn segment for chains with a ladder structure can vary depending on the conditions of the synthesis (Table 2). This means that the defects in the ladder structure may play a certain part in the flexibility of these polymers. Nevertheless, the main mechanism of their flexibility involves the deformation of valence angles and bonds of their double-chain network ... 

Hence, the perfonned within the framewoik of fractal approach analysis of behavior of polystirene, modified by Dendron s, in diluted solutions gave the same conclusions, as the analysis within the fiamewoik of classical approaches. The main distinction of the indicated approaches is the fact, that the structural model, allowing to describe quantitatively macromolecules structural state and conformation, was placed in the fractal approach base. Other characteristics (gyration radius, Kuhn segment length and so on) are the function of the indicated structural state of a macromolecule. The fractal analysis methods, used for the description of linear flexible-chain polymers behavior, can be applied successfiilly also in case of polymers with more complex macromolecular architecture. 

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