Abstract
By studying optical densities in the visible region of the spectrum and the optical densities of infrared absorption bands, the structural and conformational states of the PVC — butanone-2 system were investigated. This system has a crystalline equilibrium and it is characterized by the formation of molecular complexes in solution. We observed two types of gel formed when the chemical equilibrium for the reaction of complexes formation is shifted by the evaporation of the solvent. It is shown that when PVC is dissolved, one type of supramolecular structure is broken down and another type is formed due to the stabilization of non-equilibrium PVC conformations by solvation.
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