Journal of Siberian Federal University. Chemistry / Sulfation of Diethylaminoethyl Cellulose with Chlorosulfonic Acid in 1,4-dioxane

Full text (.pdf)
Issue
Journal of Siberian Federal University. Chemistry. 2022 15 (2)
Authors
Kazachenko, Aleksandr S.; Vasilyeva, Natal’ya Yu.; Malyar, Yuriy N.; Elsufiev, Evgeniy V.; Berezhnaya, Yaroslava D.; Noureddine Issaoui
Contact information
Kazachenko, Aleksandr S.: Institute of Chemistry and Chemical Technology SB RAS Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation; ; Vasilyeva, Natal’ya Yu.: Institute of Chemistry and Chemical Technology SB RAS Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation; Malyar, Yuriy N.: Institute of Chemistry and Chemical Technology SB RAS Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation; Elsufiev, Evgeniy V.: Institute of Chemistry and Chemical Technology SB RAS Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; Berezhnaya, Yaroslava D.: Institute of Chemistry and Chemical Technology SB RAS Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; Noureddine Issaoui: Laboratory of Quantum and Statistical Physics (LR 18ES 18) Faculty of Sciences, University of Monastir Monastir, Tunisia
Keywords
cellulose; DEAE‑cellulose; chlorosulfonic acid; sulfation
Abstract

Sulfation of diethylaminoethylcellulose with chlorosulfonic acid in 1,4-dioxane was studied. It is shown that with an increase in the amount of chlorosulfonic acid and the duration of the process, an increase in the sulfur content in diethylaminoethylcellulose sulfate is observed. The maximum sulfur content (13.8 wt.%) in DEAE‑cellulose sulfate is observed at a ratio of ClSO3H:(DEAEC) of 20.22:1 (mmol: g) and a process duration of 180 min. The introduction of a sulfate group into the DEAEC molecule was confirmed by elemental analysis and FTIR spectroscopy. In the FTIR spectra of ethylaminoethylcellulose sulfate there are absorption bands related to stretching vibrations υ(C–O–S) at 810–815 cm‑1 and asymmetric stretching vibrations υas(O=S=O) at. 1249–1254 cm‑1. Using X‑ray phase analysis and optical microscopy, it was shown that during the sulfation of diethylaminoethylcellulose, amorphization of the material is observed. It has been shown by gel permeation chromatography that with an increase in the duration of the sulfation process, glycosidic bond cleavage reactions are also observed with the formation of products with a lower molecular weight and greater polydispersity

Pages
197–205
DOI
10.17516/1998-2836-0284
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/145624