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| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
POLY.P-12 |
| Subject |
pH dependence and EDTA treatment impact on catechol modified chitosan hydrogels
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| Authors |
Quang Nguyen Ngoc, Daewon Sohn1,*
Chemistry, Hanyang University, Korea
1Department of Chemistry, Hanyang University, Korea
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| Abstract |
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-functionalized 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 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.
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| E-mail |
nguyenngocquang_T58@hus.edu.vn |
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123rd General Meeting of the KCS