Optical properties of lyotropic LC polymers

Polyalkplisocyanates so as aromatic polyamides have great importance for th eir ability to show liquid crystal properties. And so many of them are used for very high - strength synthetical Fibre materials. This work deals with delute solutions of polyisocyanates, their copolymers, aromatic polyamides and macromolecules with heterocycles in main chain. Hydrodynamic and optic al properties of these polyamides are investigated by viscometry and flow b irefringence methods. Experimental results are compared with those for diff erent polyamides studied. LC macromolecules show rigid worm - like chains b ehavior.