Dextran phosphates with the degree of substitution of 0.29–1.09 with phosphoric acid groups and of 0.14–0.83 with carbamate groups were prepared in the orthophosphoric acid-urea system. The effect of the component ratio in the esterifying mixture, temperature, and pressure in the reaction zone on the structure and physicochemical properties of dextran phosphate hydrogels and on the gel fraction yield was examined.
Russian Journal of Applied Chemistry – Springer Journals
Published: Dec 16, 2012
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