Chitosan Derivatives / Calcium Carbonate Composite Capsules Prepared by the Layer - by - Layer Deposition Method II Stabilization of the Shell by Crosslinking

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Author: SASAKI, Takashiほか

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Publication date: 2011

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Note (General)：: The layer-by-layer deposition method is utilized to prepare rodlike core / shell capsules. Chitosan (polycation)and chitosansulfate (polyanion)were al...

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Material Type: 文書・図像類
Title: Chitosan Derivatives / Calcium Carbonate Composite Capsules Prepared by the Layer - by - Layer Deposition Method II Stabilization of the Shell by Crosslinking
Author/Editor: SASAKI, Takashi
MIZUUCHI, Hiroto
SAKURAI, Kensuke
Author Heading: SASAKI, Takashi
MIZUUCHI, Hiroto
SAKURAI, Kensuke
Publication Date: 2011
Publication Date (W3CDTF): 2011
Periodical title: Journal of Nanomaterials
No. or year of volume/issue: 2011
Volume: 2011
Pages: 476752-
Text Language Code: eng
Target Audience: 一般
Note (General): The layer-by-layer deposition method is utilized to prepare rodlike core / shell capsules. Chitosan (polycation)and chitosansulfate (polyanion)were alternatively deposited on the surface of calcium carbonate whisker(rodlikeparticle). The thickness of the obtained shells ranged from 26 to 42 nm. After the deposition, the shell was treated with diisocyanate to form crosslink between the chitosan or chitosansulfate chains in order to stabilize the deposited shell. The obtained shell crosslinked rodlike capsules were successfully converted to hollow particles by immersing them into hydrochloric acid due to the enhanced shell stability, whereas from noncrosslinked shells, no hollow capsules were yielded : the shell was removed by dissolution in hydrochloric acid. It is revealed that the crosslinking reactivity is higher for 1,6-diisocyanatehexane than for tolylene 2,4-diisocyanate, suggesting that the reactivity depends on the size and flxibility of the crosslinking molecule.
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ