полісахарид

The various samples of pectins with degrees of esterification of 40-70% in the work were obtained using pectin with degree of esterification of 81.5%. It was shown that the determining factor for successful formation of hydrogel plates is the degree of esterification of polysaccharide. It was established that hydrogel plates obtained by the method of structuring of calcium salts are formed only on the basis of pectin with the degree of esterification less than 70%.

In this work water-soluble blocked alkyl- or aryl-diisocyanate and glycopolymers based on konjac glucomannan and the blocked diisocyanate were synthesized and characterized. Their phenol sorption ability has been studied. Adsorption experiments were carried out to evaluate the effects of structure of isocyanate, polysaccharide hydroxyl group substitution degree, solution pH, contact time, on the phenol removal efficiency. Langmuir and Freundlich models were applied to describe the adsorption isotherms of phenol, and adsorption parameters were evaluated.