| 羧甲基壳聚糖的取代度及保湿性 |
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| 引用本文： | 陈凌云,杜予民,肖玲,覃彩芹.羧甲基壳聚糖的取代度及保湿性[J].应用化学,2001,18(1):5-8. |
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| 作者姓名： | 陈凌云 杜予民 肖玲 覃彩芹 |
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| 作者单位： | 武汉大学 |
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| 基金项目： | 国家自然科学基金资助课题(29977014)和中金集团资助项目 |
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| 摘 要： | 吸湿性;分子量;羧甲基壳聚糖的取代度及保湿性
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| 关 键 词： | 吸湿性 分子量 羧甲基壳聚糖的取代度及保湿性 |
| 文章编号： | 1000-0518(2001)01-0005-04 |
| 收稿时间： | 2009-06-29 |
| 修稿时间： | 2000年3月29日 |
Study on the Substitution
and Moisture-Retention Capacity of Carboxymethyl Chitosan |
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| CHEN Ling Yun,DU Yu Min ,XIAO Ling,QIN Cai Qin.Study on the Substitution
and Moisture-Retention Capacity of Carboxymethyl Chitosan[J].Chinese Journal of Applied Chemistry,2001,18(1):5-8. |
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| Authors: | CHEN Ling Yun DU Yu Min XIAO Ling QIN Cai Qin |
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| Institution: | CHEN Ling Yun,DU Yu Min *,XIAO Ling,QIN Cai Qin |
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| Abstract: | A series of N,O-carboxymethylchitosan(CM-chitosan) were prepared.The position and degree of substitution were determined by potentiometric titration, IR and 13C NMR. The results indicated that the degree of substitution of the compounds increased significantly with decrease of molecular weight of chitosan and the carboxymethylation reactivity decreased in the order OH-6＞OH-3＞NH2. The moisture-absorption and moisture-retention properties of CM-chitosans and moisture-retention properties of CM-chitosans were found quite similar to those of hyaluronic acid. The moisture absorbability increased with increasing in molecular weight and moisture retention capacity of CM-chitosas with the degree of substitution. The CM-chitosans with molecular weight from 0.56×104 to 8.6×104 and degree of substitution greater than 1.0 had better moisture-absorption moisture-retention capacity than hyaluronic acid. |
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| Keywords: | carboxymethylchitosan moisture absorption moisture retention substitution degree molecular weight |
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