Solution behavior of methyl cellulose mixtures with poly(N-vinylformamide) in water and dimethyl sulfoxide |
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| Authors: | A. M. Bochek Sh. Nishiyama N. M. Zabivalova I. I. Gavrilova N. A. Nesterova G. M. Poltoratskii E. F. Panarin |
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| Affiliation: | 1.Institute of Macromolecular Compounds,Russian Academy of Sciences,St. Petersburg,Russia;2.St. Petersburg State Technological University of Plant Polymers,St. Petersburg,Russia |
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| Abstract: | The rheological properties of diluted and moderately concentrated solutions of methyl cellulose mixtures with poly(N-vinylformamide) in water and dimethyl sulfoxide are investigated. Negative deviations of the viscosities of these solutions from the additive values are observed and explained by different mechanisms of solvation of macromolecules with water and dimethyl sulfoxide. Incompatibility of the polymers in a common solvent is discovered. This circumstance leads to the formation of a new system of hydrogen bonds and rearrangement of the structural organization of solutions. |
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