Clean Preparation Process of Chitosan Oligomers in Gly Series Ionic Liquids Homogeneous System

被引：9
|
作者：
Li, Lu [1 ]
Yuan, Bing [2 ]
Liu, Shi-Wei [1 ]
Yu, Shi-Tao [1 ]
Xie, Cong-Xia [2 ]
Liu, Fu-Sheng [1 ]
Shan, Li-Juan [1 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China
[2] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Minist Educ, Key Lab Ecochem Engn, Qingdao 266042, Peoples R China
来源：
JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2012年 / 20卷 / 02期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
Oxidative degradation; Chitosan oligomers; Ionic liquids; Reusable performance; DEGRADATION; CHITIN; DISSOLUTION; CELLULOSE; GROWTH; ACID;
D O I：
10.1007/s10924-011-0388-z
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Chitosan oligomers because of its water solubility has some special physiological functions, such as binding lipid, affecting the mitogenic response, restraining the growth of tumors, and was widely used in cosmetics and health. H2O2/Gly (Glycine) series ionic liquids system, a new solvable-catalytic system, was an efficient clean process for preparation of chitosan oligomers. The effects of the anions of Gly series ionic liquids on the solubility and degradation for chitosan were investigated, and the results showed that [Gly]Cl aqueous solution was of good solubility and assistant degradation for chitosan. In additional, the mechanism for oxidative degradation of chitosan in ionic liquids (ILs) was studied. The effect on the property of chitosan oligomers catalyzed by H2O2, in two different kinds of solvents (HAc and [Gly]Cl) were compared. It was found that the performance of moisture absorption and retention of chitosan oligomers using ionic liquid aqueous solution as solvent was better than that using HAc aqueous solution as solvent, and even superior to that of hyaluronic acid. Furthermore, [Gly]Cl could be easily separated from the product and reused with only slight loss. It could provide an efficient and environmental friendly method for the preparation of chitosan oligomers in H2O2/ILs system.
引用
收藏
页码：388 / 394
页数：7
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