Flocculation of Titanium Dioxide with Functionalized Citrus Pectin

Modified polysaccharides were prepared by the reaction of citrus pectin with a cationic monomer, (1,2-epoxypropyl)triethylammonium chloride, in alkaline medium and under the action of microwave radiation in the reactor system microwave–ultrasonic–UV-induced synthesis. Organic hybrids were prepared b...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2020-02, Vol.93 (2), p.225-231
Main Authors: Proskurina, V. E., Shilova, S. V., Kashina, E. S., Rakhmatullina, A. P., Galyametdinov, Yu. G.
Format: Article
Language:English
Subjects:
Aqueous solutions
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Chitosan
Flocculation
Industrial Chemistry/Chemical Engineering
Macromolecules
Microwaves
Pectin
Physicochemical Studies of Systems and Processes
Polysaccharides
Saline solutions
Sedimentation
Titanium
Titanium dioxide
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Summary:Modified polysaccharides were prepared by the reaction of citrus pectin with a cationic monomer, (1,2-epoxypropyl)triethylammonium chloride, in alkaline medium and under the action of microwave radiation in the reactor system microwave–ultrasonic–UV-induced synthesis. Organic hybrids were prepared by mixing aqueous solutions of natural polysaccharides (pectin and modified pectin with chitosan) under ambient conditions in 1 : 1 ratio. The influence of the concentration of citrus pectin, its modified samples, chitosan, and their organic hybrids on the flocculating properties was studied for a model disperse system, a suspension of titanium dioxide in water and aqueous salt solutions, under the conditions of free (unrestricted) sedimentation. The influence of the ionic strength on the conformational state of polysaccharide macromolecules and on the aggregation of titanium dioxide particles was analyzed.
ISSN:1070-4272
1608-3296
DOI:10.1134/S107042722002010X