Influence of the Nature of the Crosslinking Agent on the Structure and Properties of the Organic Xerogels Obtained from Cedar Bark Tannins : научное издание
Библиографическое описание:Influence of the Nature of the Crosslinking Agent on the Structure and Properties of the Organic Xerogels Obtained from Cedar Bark Tannins : научное издание / N. M. Mikova, I. P. Ivanov, A. M. Zhizhaev [et al.]. - Текст : непосредственный // Russian Journal of Bioorganic Chemistry. - 2025. - Т. 51, № 7. - P. 3047-3055. - This study was carried out in the framework of the State Assignment of the Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences (project WFES-2021-0017) with the use of equipment of the Krasnoyarsk Regional Collective Use Center, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. - ISSN 1068-1620. - ISSN 1608-330X, DOI 10.1134/S1068162025150257.
Аннотация:<b>Objective:</b> To synthesize organic xerogels from Siberian cedar bark tannins and study the effect of different crosslinking agents (formaldehyde, furfuryl alcohol, glutaraldehyde) on their properties. <b>Methods:</b> Xerogels were prepared by sol-gel condensation and characterized using density measurements, FT-IR, BET analysis, SEM, and TGA. Methylene blue sorption was tested. <b>Results and Discussion:</b> The crosslinking agent defined the gel structure. The tannin-furfuryl alcohol (T/FA) xerogel was microporous and dense (0.348 g/cm<sup>3</sup>), while tannin-formaldehyde (T/F) and tannin-glutaric (T/G) xerogels were meso/macroporous with low density (~0.07 g/cm<sup>3</sup>). T/FA was the most thermally stable (onset decomposition at 282°C). The T/F xerogel showed the highest methylene blue sorption capacity (107 mg/g). <b>Conclusions:</b> Cedar bark tannins are a promising raw material for producing xerogels. The crosslinking agent type allows control over the porosity, density, thermal stability, and sorption properties of the final material.
