Issue 21, 2023

Rapid dissolution of chitin and chitosan with degree of deacetylation less than 80% in KOH/urea aqueous solution

Abstract

Chitin and chitosan exhibit immense potential applications as biomaterials, wearable flexible electronic devices, energy conversion and storage materials, and food packaging. However, the development of a universal green aqueous solvent for chitin and chitosan, and a comprehensive understanding of their dissolution mechanism, requires further investigation. Here, the rapid dissolution of chitin and chitosan with degree of deacetylation less than 80% in the universal solvent KOH/urea aqueous solution has been analyzed. The hierarchical structural transitions and interactions of deacetylated α-chitin and chitosan in the KOH/urea aqueous solution were investigated. Subsequently, a desolvation–intercalation dissolution mechanism was proposed. This study could guide future research on chitin and chitosan at the molecular level, facilitating the development of advanced chitin- and chitosan-based materials with applications ranging from bioelectronics to regenerative medicine.

Graphical abstract: Rapid dissolution of chitin and chitosan with degree of deacetylation less than 80% in KOH/urea aqueous solution

Supplementary files

Article information

Article type
Paper
Submitted
21 Jūn. 2023
Accepted
15 Aug. 2023
First published
16 Aug. 2023

Green Chem., 2023,25, 8593-8605

Rapid dissolution of chitin and chitosan with degree of deacetylation less than 80% in KOH/urea aqueous solution

Y. Zhong, X. Zhang, Q. Zhang and J. Cai, Green Chem., 2023, 25, 8593 DOI: 10.1039/D3GC02231E

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