Abstract
Biodegradable polymer composite materials (PCM) based on modified starch and chitosan were obtained. Starch was modified by graft polymerization with acrylamide, chitosan with enanthaldehyde with the formation of Schiff bases, which ensured the combination of polysaccharides in an aqueous solution in the pH range of 3.5–5.8. The physicochemical and structural properties, as well as the biocompatibility and biodegradability of PCM were studied. The films based on modified polysaccharides are characterized by increased strength characteristics compared to the parent components. With the weight ratio of the starch/acrylamide grafted copolymer and chitosan being equal, the ultimate tensile strength of the composite films was 65 MPa at a strain of 11%. The films completely biodegraded under the action of Aspergillus niger micromycete within 4 weeks. The composite biocompatibility was confirmed by the adhesion and growth on the films of the hTERT BJ-5ta cell line fibroblasts. The obtained composite is promising as a packaging and biomedical material.
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This work was financially supported by the Russian Science Foundation (Project No. 23-13-00342).
No human or animal subjects were used in this research.
The authors declare no competing interests.
Based on the materials of the XVIII International Research and Development Conference “Novel Polymeric Composites. Mikitaev Readings” (July 4–9, 2022; p. Elbrus, Kabardino-Balkarian Republic, Russia).
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, Vol. 72, No. 6, pp. 1405–1413, June, 2023.
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Kachalova, E.A., Apryatina, K.V., Mochalova, A.E. et al. Synthesis and properties of biodegradable film materials based on modified starch. Russ Chem Bull 72, 1405–1413 (2023). https://doi.org/10.1007/s11172-023-3915-x
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DOI: https://doi.org/10.1007/s11172-023-3915-x