Open AccessEnvironmentally friendly guar gum sulfation with a sulfamic acid-urea mixture
Author(s) -
Аleksandr S. Kazachenko,
N. Yu. Vasilyeva,
Yuriy N. Malyar
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1515/4/042018
Subject(s) - sulfamic acid , guar gum , sulfation , environmentally friendly , urea , chemistry , guar , sulfate , solvent , sulfur , organic chemistry , nuclear chemistry , food science , biochemistry , ecology , biology
The guar gum was sulfated for the first time with a deep eutectic solvent, a sulfamic acid / urea mixture at a ratio of (1:1). The optimal conditions of the process are shown to ensure the production of guar gum sulfate with a maximum sulfur content (16.1% wt.). The introduction of a sulfate group into a guar gum molecule is proved by elemental analysis. A mathematical model of the process of sulfation of guar gum is calculated. It is shown that the resulting model has high predictive properties. The developed method is environmentally safer due to the fact that it eliminates the use of toxic solvents.