| Preparation of chitin nanofibers from squid pen beta-chitin by simple mechanical treatment under acid conditions. | |
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MedLine Citation:
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PMID: 18547104 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A procedure for preparing individualized chitin nanofibers 3-4 nm in cross-sectional width and at least a few microns in length was developed. The key factors to prepare the chitin nanofibers with such high aspect ratios are as follows: (1) squid pen beta-chitin is used as the starting material and (2) ultrasonication of the beta-chitin in water at pH 3-4 and 0.1-0.3% consistency for a few minutes. Transparent and highly viscous dispersions of squid pen beta-chitin nanofibers in water can be obtained by this method. No N-deacetylation occurs on the chitin molecules during the nanofiber conversion procedure. Moreover, the original crystal structure of beta-chitin is maintained, although crystallinity index decreases from 0.51 to 0.37 as a result of the nanofiber conversion. Cationization of the C2 amino groups present on the crystallite surfaces of the squid pen beta-chitin under acid conditions is necessary for preparing the nanofibers. |
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Authors:
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Yimin Fan; Tsuguyuki Saito; Akira Isogai |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-06-12 |
Journal Detail:
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Title: Biomacromolecules Volume: 9 ISSN: 1526-4602 ISO Abbreviation: Biomacromolecules Publication Date: 2008 Jul |
Date Detail:
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Created Date: 2008-07-15 Completed Date: 2008-09-22 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100892849 Medline TA: Biomacromolecules Country: United States |
Other Details:
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Languages: eng Pagination: 1919-23 Citation Subset: IM |
Affiliation:
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Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Chitin / chemistry* Decapodiformes Nanostructures / chemistry* Sonication Viscosity |
| Chemical | |
Reg. No./Substance:
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1398-61-4/Chitin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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