Chitosan (CS) is a natural polycationic polysaccharide and pH sensitive polymer with incomplete deacetylation from claiming chitin. It is also a guaranteeing material in terms of pharmaceutical, chemical, and sustenance industry due to its exceptional structure including reactive –OH and –NH2 groups. In this study, a catechol-modified chitosan (CCS) for an eminent level for substitution was synthesized and propelled by marine mussel cuticles in place on research those intricate connections between Fe3+ and catechol under acidic conditions. The ratios of catechol, chitosan and other reagents decide the structure of the hydrogel. The gel formation is then well-maintained by dual cross-linking through electrostatic interactions between CCS and oxidative ions such as Fe3+ and IO4- through covalent catechol-coupling-based coordinate bonds. The hydrogels showed enhanced cohesiveness and shock-absorbing properties at lower pH and ethylenediaminetetraacetic acid (EDTA) treatment due to coordinate bonds inspired by mussel byssal threads. Thus, the gelation time, rheological properties, UV-vis and 1H- Nuclear Magnetic Resonance spectroscopy, and the morphologic aspects were elucidated to describe those crosslinking components and the physical properties of the chitosan backbones and hydrogel frameworks.

Characteristic studies of ethylenediamine tetra-acetic acid treatment on Iron (III) – induced modified catechol chitosan hydrogel in different pH conditions

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ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.