摘要
通过Ｈ２Ｏ２的降解作用可得到水溶性壳糖胺（ＣＳ）产物．降解速度及产物颜色与ＣＳ用量、Ｈ２Ｏ２浓度和降解温度等工艺条件有关．实验结果表明，在８０℃温度下，搅拌速度为２４００ｒ·ｍｉｎ－１，用６ｇ·Ｌ－１Ｈ２Ｏ２可使３３．０ｇ·Ｌ－１ＣＳ降解成水溶性产物，其降解速度为１．２１ｇ·Ｌ－１·ｈ－１．由产物的ＦＴ－ＩＲ谱图初步推断了降解反应机理．由所得水溶性ＣＳ制得了一种兼有材保与环保双重作用的绿色涂层。
A preparative method of water soluble chitosan has been established by degradation reaction of chitosan with H 2O 2. The rate of degradation and the color of the products are influenced by such conditions as the dose of chitosan, the concentration of H 2O 2 and the temperature of reaction. The results indicate that if the stirring rate is controlled at 2 400 r·min -1 , 33.0 g·L -1 chitosan could be degradated into water soluble product by 6 g·L -1 H 2O 2 at 80℃. A kind of green coatings is obtained with this water soluble chitosan. The mechanism of the reaction has been speculated from IR spectrum of the products. It is interesting of chemical degradation of chitosan for the research and development of chitin and chitosan.
出处
《武汉大学学报（自然科学版）》
CSCD
1999年第2期181-184,共4页
Journal of Wuhan University(Natural Science Edition)
基金
国家自然科学基金
