| N-烷基壳聚糖的羽毛状结晶 |
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| 引用本文： | 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].吉首大学学报(自然科学版),2003,24(2):20-22. |
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| 作者姓名： | 董炎明 赵雅青 王惠武 阮永红 |
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| 作者单位： | (厦门大学材料科学与工程系,福建 厦门361005) |
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| 基金项目： | 国家自然科学基金资助项目(29974023) |
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| 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.
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| 关 键 词： | 壳聚糖 N-烷基壳聚糖 结晶形态 晶片 树枝状结晶 |
| 文章编号： | 1007-2985(2003)02-0020-03 |
| 修稿时间： | 2003年2月21日 |
Feather-like Crystals of N-Alkyl Chitosan |
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| DONG Yan-Ming,ZHAO Ya-Qing,WANG Hui-Wu,RUAN Yong-Hong.Feather-like Crystals of N-Alkyl Chitosan[J].Journal of Jishou University(Natural Science Edition),2003,24(2):20-22. |
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| Authors: | DONG Yan-Ming ZHAO Ya-Qing WANG Hui-Wu RUAN Yong-Hong |
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| Institution: | (Department of Materials Science and Engineering,Xiamen University,Xiamen 361005,Fujian China) |
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| 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. |
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| Keywords: | chitosan N-alkyl chitosan crystalline morphology lamella dendritic crystals |
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