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Citation: ZENG Kun-Wei, LI Ye-Ping, FANG Yue-E. Preparation and Structure of Water-soluble Microcrystalline Chitosan[J]. Chinese Journal of Applied Chemistry, ;2002, 19(3): 216-219. shu

Preparation and Structure of Water-soluble Microcrystalline Chitosan

1.
Department of Applied Chemistry, University of Science & Technology of China, Hefei 230026

Corresponding author: FANG Yue-E,
Received Date: 8 May 2001
Available Online: 16 November 2001

Crude chitosan powder was degraded by HCl or H₃PO₄ water/ethanol solution to give two kinds of water-soluble microcrystalline chitosan with diameters being inrange of 400 nm to 800 nm. In IR spectra acetamide bands of crude chitosan(at 1650, 1600 cm^-1) disappeared completely, and instead, the asymmetric distortion vibration and symmetric distortion vibration bands of -NH₃⁺ were observed at 1 620, 1 520 cm^-1. The microcrystalline chitosan prepared by acidolysis with HCl solution dissolved in clod water; and that with H₃PO₄ solution dissolved in water only at 60℃.
- water-soluble,
- microcrystalline,
- chitosan
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