N_羧甲基壳聚糖的制备表征及性能研究.pdf
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第33 卷 第11 期 Vol. 33 No.11
2010 年11 月 Environmental Science Technology 第33 卷
Nov. 2 0 1 0
N- 羧甲基壳聚糖的制备表征及性能研究
1* 2
孙立苹 ,杜予民
(1.浙江林学院环境科技学院,浙江 杭州 311300 ; 2.武汉大学资环学院,湖北 武汉 430072)
摘 要:通过乙醛酸与壳聚糖形成西佛碱,用硼氢化钠还原制备N 位取代的羧甲基壳聚糖,采用FT-IR、X-ray、NMR 分析手段对分子结
构进行表征。吸湿保湿性能研究发现取代度较低的N-羧甲基壳聚糖吸湿性能较好,保湿性能随着羧甲基取代度的增加而增强。通过羟基磷灰
石、骨胶原与N-羧甲基壳聚糖制备了新型的复合生物材料,与没有添加N-羧甲基壳聚糖的复合材料相比较,发现具有良好的机械性能和溶
涨性能。
关键词:N-羧甲基壳聚糖;结构表征; 吸湿保湿;复合材料; 骨修复
中图分类号:X132 ;O636.1 文献标志码:A doi :10.3969/j.issn.1003-6504.2010.11.014 文章编号:1003-6504(2010)11-0062-04
Preparation ,Characterization and Properties of N-carboxymethyl
Chitosan
*
SUN Li-ping1 , DU Yu-min2
(1.School of Environmental Science and Technology ,Zhejiang Forestry University ,Hangzhou 311300 ,China ;
2.School of Resource and Environmental Science ,Wuhan University ,Wuhan 430072 ,China)
Abstract :N -carboxymethyl chitosan was prepared by adding glyoxylic acid and sodium hydroxide ,with its molecular
structure characterized by FT -IR ,XRD and NMR. Its moisture -absorption and retention abilities were also studied. New
composite biomaterial was made from hydroxyapatite and collagen conjugated with N-carboxymethyl chitosan. The structure
evaluation of composite showed more dense arrangement due to formation of collagen-N-carboxymethyl chitosan conjugate ,
and
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