Investigation of technologically significant physical properties of various brands of polyvinyl alcohol

Stepanova E.V., Ivakhnenko Yu.A., Maximov V.G., Istomin A.V.
UDC
678.8
DOI
10.18577/2307-6046-2024-0-2-23-33
Article PDF (Russian) (801.15 KB)
How to cite
Stepanova E.V., Ivakhnenko Yu.A., Maximov V.G., Istomin A.V. Investigation of technologically significant physical properties of various brands of polyvinyl alcohol // Proceedings of VIAM. 2024. No. 2. DOI: 10.18577/2307-6046-2024-0-2-23-33. URL: https://test.viam.ru/en/journal/2024/2/3
Keywords
polyvinyl alcohol, low molecular weight polymer, high molecular weight polymer, rheological characteristics, viscosity, activation energy
Abstract

The article presents the results of research on several brands of partially hydrolyzed polyvinyl alcohol. Rheological characteristics (dependence of viscosity on temperature and activation energy of flow) of aqueous polymer solutions are determined. The completeness of the dissolution of polyvinyl alcohol was determined by optical microscopy. The types of foreign particles present in the solution characteristic of each method of dissolution and type of polymer have been identified. It has been established that the use of polyvinyl alcohol with a relatively low molecular weight is required to obtain technologically optimal solutions.

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