SOLID-STATE MODIFICATION OF CHITOSAN BY CINNAMIC ACID
https://doi.org/10.31143/2221-7789-2025-4-55-59
EDN: OGGXLW
Abstract
Solvent-free acylation of chitosan with cinnamic acid was performed under shear stresses in a twin-screw extruder. At 100 °C, varying the chitosan-to-cinnamic acid molar ratio (1:0.5, 1:1, 1:1.5) yielded derivatives with degree of substitution values ranging from 0.05 to 0.21. Fourier-transform infrared spectroscopy revealed that the solid-state reaction proceeds via two pathways, involving both ionic and covalent bonding of the acid or its residues to the amino groups of the polymer.
About the Authors
M. A. Khavpachev
L.M. Litvinenko Institute of Physical-Organic Chemistry and Coal Chemistry; N.S. Enikolopov Institute of Synthetic Polymeric Materials
Russian Federation
Russian Federation
B. V. Malyk
L.M. Litvinenko Institute of Physical-Organic Chemistry and Coal Chemistry; N.S. Enikolopov Institute of Synthetic Polymeric Materials
Russian Federation
Russian Federation
P. L. Ivanov
L.M. Litvinenko Institute of Physical-Organic Chemistry and Coal Chemistry; N.S. Enikolopov Institute of Synthetic Polymeric Materials
Russian Federation
Russian Federation
O. A. Ryabkova
L.M. Litvinenko Institute of Physical-Organic Chemistry and Coal Chemistry
Russian Federation
Russian Federation
T. A. Akopova
N.S. Enikolopov Institute of Synthetic Polymeric Materials
Russian Federation
Russian Federation
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Review
For citations:
Khavpachev M.A., Malyk B.V., Ivanov P.L., Ryabkova O.A., Akopova T.A. SOLID-STATE MODIFICATION OF CHITOSAN BY CINNAMIC ACID. Proceedings of the Kabardino-Balkarian State University. 2025;15(4):55-59. (In Russ.) https://doi.org/10.31143/2221-7789-2025-4-55-59. EDN: OGGXLW
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