Abstract
With the aid of the turbidity-spectrum method, the cloud-point method, X-ray analysis, and polarization microscopy and the use of a polarization-photoelectric apparatus, the sizes of supramolecular particles are determined and the liquid-crystalline phase transitions and the structure of cellulose ether solutions are studied in a wide composition range. As the concentration of the polymer in solution increases, the sizes of light-scattering particles tend to increase from several nanometers to several thousand nanometers. This effect is the most pronounced during formation of the liquid-crystalline phase. The “packet” mechanism of self-assembly of macromolecules is advanced. For cyanoethyl cellulose macromolecules, the coilhelix transition is observed with an increase in the concentration of the polymer in solution. For the cyanoethyl cellulose-dimethylacetamide system, the method for calculating the amount of macromolecules in supramolecular particles in both isotropic and anisotropic regions is suggested.
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