Highly acetylated chestnut shell cellulose obtained by electron beam pretreatment assisted acetylation reaction: A combined experimental and computational approach
Niu L. Zhang X. Li R. Zhao Q. Wang X. Moldakhmetova R. Li W.
August 2025Elsevier B.V.
International Journal of Biological Macromolecules
2025#320
Green, biodegradable, and renewable cellulose is a promising candidate for developing sustainable materials. This work prepared highly acetylated cellulose via electron beam irradiation pretreatment followed by acetylation. The degree of acetylation peaked at an acetic anhydride concentration of 5.0 g/mol and an irradiation dose of 150 kGy (DS = 1.0). EBI effectively disrupted the intramolecular hydrogen bonding of cellulose, increasing the accessibility of hydroxyl groups and facilitating acetylation. The acetylation modification induced roughening of the cellulose surface and the effect was more evident with increasing irradiation dose. Fourier transform infrared spectroscopy confirmed the successful introduction of acetyl groups, changing the crystalline behavior of cellulose. Molecular dynamics simulation demonstrated significant enhancements in the mechanical properties of acetylated cellulose. This work provides valuable information for designing highly acetylated cellulose, offering theoretical support for its industrial production.
Acetylation , Cellulose , Electron beam irradiation pretreatment
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College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, China
College of Food Technology, Technical Faculty, Saken Seifullin Kazakh Agrotechnical University, Zhenis Avenue 62, Astana, 010000, Kazakhstan
College of Food Science and Engineering
College of Food Technology
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