Rheology of Polyhydroxyalkanoate Solutions

The rheology of solutions of polyhydroxyalkanoates in chloroform and dichloromethane was studied. The dynamic viscosity of solutions depended on type of solvent and PHA. The polymer solutions with increase of temperature behave as Newtonian fluids. Dynamic viscosity was increasing with the concentra...

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Published in:Journal of Siberian Federal University. Chemistry 2016-06, Vol.9 (2), p.190-197
Main Authors: Goncharov, Dmitry B, Sukovatyi, Alexey G
Format: Article
Language:eng ; rus
Subjects:
chloroform
dichloromethane
dynamic viscosity
polyhydroxyalkanoates
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Sukovatyi, Alexey G
description The rheology of solutions of polyhydroxyalkanoates in chloroform and dichloromethane was studied. The dynamic viscosity of solutions depended on type of solvent and PHA. The polymer solutions with increase of temperature behave as Newtonian fluids. Dynamic viscosity was increasing with the concentration of polymer in solution, regardless of the solvent. Solutions of PHAs in descending order of magnitude of dynamic viscosity can be positioned in the following order: P(3HB) - P(3HB-3HV) - P(3GB-3HH) - P(3HB-4HB). The magnitude of the dynamic viscosity of solutions based on chloroform in 3-3,5 times higher than that of solutions based on dichloromethane at identical concentration and temperature. The obtained values of dynamic viscosity have demonstrated the dependence of rheological parameter on the chemical composition of the polymer, and the characteristics of solvent (composition, temperature, and concentration).
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identifier ISSN: 1997-1389
ispartof Journal of Siberian Federal University. Chemistry, 2016-06, Vol.9 (2), p.190-197
issn 1997-1389
1998-2836
2313-5530
2313-6049
language eng ; rus
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source Publicly Available Content Database
subjects chloroform
dichloromethane
dynamic viscosity
polyhydroxyalkanoates
title Rheology of Polyhydroxyalkanoate Solutions
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