N-烷基壳聚糖的羽毛状结晶

journal6 ›› 2003, Vol. 24 ›› Issue (2): 20-22.

N-烷基壳聚糖的羽毛状结晶

(厦门大学材料科学与工程系,福建厦门361005)

出版日期:2003-06-15 发布日期:2012-11-07
作者简介:董炎明（1947-），男，福建省厦门市人，厦门大学材料科学与工程系教授，博士生导师，主要从事高分子液晶和天然高分子甲壳素研究.
基金资助:
国家自然科学基金资助项目(29974023)

Feather-like Crystals of N-Alkyl Chitosan

(Department of Materials Science and Engineering,Xiamen University,Xiamen 361005,Fujian China)

Online:2003-06-15 Published:2012-11-07

摘要/Abstract

摘要：将N-甲基壳聚糖或N-乙基壳聚糖的甲酸溶液在高真空中浇铸成膜.然后将浇铸膜在25 ℃和65％相对湿度的环境中结晶化得到羽毛状结晶.这种羽毛状结晶不同于低真空处理的浇铸膜内生长的球晶.除了形态不同外，双折射符号也完全不同，前者是负的，而后者是正的.羽毛状结晶应是树枝状结晶的一种，但前者的晶带是弯曲的，而后者的晶带基本上是直的.

关键词： 壳聚糖, N-烷基壳聚糖, 结晶形态, 晶片, 树枝状结晶

Abstract: The N-methyl chitosan or N-ethyl chitosan was cast into films at high vacuum.Then the cast film crystallized at 25 ℃ and 65% relative humidity and the feather-like crystals appeared.The feather-like crystals were different with spherulites,which grew in the films cast at low vacuum.In addition to morphology,the birefrigence nature of feather-like crystals and spherulites was completely different.The former was negative,but the latter was positive.The feather-like crystals were believed to belong to one kind of dendritic crystals.

Key words: chitosan, N-alkyl chitosan, crystalline morphology lamella, dendritic crystals

董炎明, 赵雅青, 王惠武, 阮永红. N-烷基壳聚糖的羽毛状结晶[J]. journal6, 2003, 24(2): 20-22.

DONG Yan-Ming, ZHAO Ya-Qing, WANG Hui-Wu, RUAN Yong-Hong. Feather-like Crystals of N-Alkyl Chitosan[J]. journal6, 2003, 24(2): 20-22.

[1]	贺西平，李蔷. 压电双晶片弯曲振动频率方程及其位移解[J]. 吉首大学学报（自然科学版）, 2017, 38(3): 13-18.
[2]	董炎明, 吴玉松, 阮永红, 赵雅青, 王惠武. 含氨酯基的壳聚糖衍生物的胆甾液晶螺旋性质[J]. journal6, 2002, 23(4): 26-29.