Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2023

Идентификатор DOI: 10.3390/polym15091999

Ключевые слова: polysaccharides, arabinogalactan, biofilms, carboxylic acids, crosslinking, methylene blue

Аннотация: To ensure the high quality of water, it is necessary to remove toxic pollutants. At present, purification of water is implemented using various sorbents. The efficient sorption materials are modified polysaccharides. In this study, we report on a new environmentally friendly method for modifying larch hemicellulose—arabinogalactan (AG)—with polybasic carboxylic acids (citric, succinic, oxalic, and adipic) to obtain composite materials. The synthesized AG derivatives have been explored by a complex of physicochemical methods, including gel permeation chromatography (GPC), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), scanning electron microscopy (SEM), and sorption capacity investigations. It is shown that the heat treatment results in the formation of additional inter- and intramolecular bonds between carboxylic acids and polysaccharide molecules. The formation of ester bonds has been confirmed by the appearance of absorption bands in the IR spectra in the range of 1750–1690 cm−1. It has been found, using the TGA study, that the most thermally stable (up to 190 °C) sample is arabinogalactan oxalate obtained under heat treatment. The SEM study of the synthesized AG films has shown that the modified samples have the homogeneous film surface ensured by cross-linking. It has been established, when studying the sorption properties of the AG derivatives, that AG succinate (82.52%) obtained by lyophilization has the highest sorption capacity, due to the developed mesoporous surface, which, in turn, makes the synthesized films promising eco-friendly materials for use as drug carriers, sorbents, and water treatment agents.

Журнал: Polymers

Выпуск журнала: Т.15, №9

Номера страниц: 1999

ISSN журнала: 20734360

Место издания: Basel

Издатель: MDPI

• Malyar Yuriy N. (School of Non-Ferrous Metals and Materials Science, Siberian Federal University)
• Borovkova Valentina S. (School of Non-Ferrous Metals and Materials Science, Siberian Federal University)
• Kazachenko Alexander S. (School of Non-Ferrous Metals and Materials Science, Siberian Federal University)
• Fetisova Olga Yu. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences)
• Skripnikov Andrey M. (School of Non-Ferrous Metals and Materials Science, Siberian Federal University)
• Sychev Valentin V. (School of Non-Ferrous Metals and Materials Science, Siberian Federal University)
• Taran Oxana P. (School of Non-Ferrous Metals and Materials Science, Siberian Federal University)

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