Phase and conformational transitions in the polyvinyl chloride-butanone-2 system

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...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 1988-05, Vol.19 (5), p.501-508
Main Authors: CHALYKH, A. Y, SAPOZHNIKOVA, I. N, BULGAKOVA, R. A, SOKOLOVA, N. P
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
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Summary: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. Two types of gel were observed to form 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. 16 ref.--AA
ISSN:0170-0839
1436-2449
DOI:10.1007/BF00263921