Journal
INTERNATIONAL JOURNAL OF FOOD PROPERTIES
Volume 21, Issue 1, Pages 2007-2015Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10942912.2018.1499113
Keywords
self-assembly; chitosan; calcium ion; conjugates; atomic force microscopy
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The well-organized chitosan film on mica surface has drawn wide attention for its potential applications and studies on the process of self-assembly. In this article, atomic force microscopy was used to investigate the ultrastructure of the self-assembly of chitosan molecules with calcium ions in different concentrations. It was showed that calcium ions might affect the self-assembly of chitosan to a certain extent, and chitosan molecules gathered from fibrils to circular, and finally formed to film with the increasing concentration of calcium ions. Further, the formation mechanism of Ca(II)-chitosan conjugates was adapted to explain the effects of calcium ions on the self-assembly of chitosan. These results and the related analysis would be valuable for guiding the pattern of chitosan self-assembly with a potential application in food packaging science and engineering.
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