Polysiloxanes cyclolinear

In the 1980 s, a novel cdass of mesomorphic polysiloxanes has been added to the family of element-organic mesomorphic macromolecules viz. the cyclolinear poly-organosiloxanes. Depending on the nature of substituents and the type of linking of cycles in macromolecules, the flexibility of such cyclolinear macromolecules can change considerably from being very flexible, similar to typical linear polyorgano-... 

Thus, the subject of the review are linear and cyclolinear etement-organic polymers forming a spedfic type of the mesophase state. The structure of the mesoj iases and the formation of liquid crystalline macromolecules, in wiiidi classical mesogens in the main or side chains are linked by flexible polysiloxane or poly-phosphazene spacers are similar to the liquid-crystalline polymers with organic spacers. Structure and properties of these polymers have been reviewed recently and, therefore, will not be considered in our article. 

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