Abstract
The preparation of aqueous solutions of chitosan oligo(ethylene oxide) sulfonate and special features of their viscosity and foam-stabilizing properties are described. It is shown that the complete dissolution of the chitosan derivative takes place at a degree of substitution of at least 0.75. An increase in the degree of substitution to 1 leads to a decrease in the viscosity of solutions; however, the viscosity of solutions of chitosan oligo(ethylene oxide) sulfonate in all cases greatly exceeds that of solutions of chitosan acetate of the same concentration. Unlike chitosan acetate solutions, the solutions of chitosan oligo(ethylene oxide) sulfonate have a higher stability and more pronounced foam-stabilizing properties.
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