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A simple method for the preparation of stable chitooligomers
Author(s) -
Zeng Lintao,
Qin Caiqin,
Li Wei,
Wang Wei
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.29286
Subject(s) - thermogravimetric analysis , chitosan , hydrochloric acid , fourier transform infrared spectroscopy , degradation (telecommunications) , molar ratio , nuclear chemistry , thermal stability , chemistry , materials science , differential thermal analysis , polymer chemistry , chemical engineering , organic chemistry , computer science , catalysis , diffraction , physics , telecommunications , optics , engineering
The chitosan was degraded by the cheap, efficient, and commercially available enzymes in hydrochloric acid solution. The effect of molar ratio of added HCl to NH 2 of chitosan on the degradation was investigated, and the favorable ratio was between 0.50 and 0.95. The chitooligomer hydrochlorides were directly prepared by this simple method. The chitooligomer hydrochlorides were characterized by thermogravimetric analysis, differential thermal analysis, and Fourier transform infrared. These results show that the obtained chitooligomer hydrochlorides were much more stable than the chitooligomer acetates. This preparation procedure of chitooligomer hydrochlorides was simple and cheap, and helpful for the preservation of chitooligomers. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009