METHOD OF OBTAINING WATER-INSOLUBLE SULPHUR-CONTAINING CHITOSAN-BASED BIOMATERIAL

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to the field of organic synthesis. A method of obtaining a water-insoluble sulphur-containing chitosan-based biopolymer includes interaction of chitosan with a thiomethylating agent, preliminarily obtained by saturation of a formaldehyde solution with gaseous H₂S, with molar ratio chitosan: formaldehyde: hydrogen sulphide 1:6:4, at a temperature of 60°C for 20-25 hours.;EFFECT: invention ensures obtaining the water-insoluble sulphur-containing chitosan-based biopolymer, which possesses a complexing activity to ions of noble metals (Pd, Pt).;1 ex, 1 tbl