| 气氛对壳聚糖及其铜离子混合物热降解的影响 |
| |
| 引用本文： | 欧春艳,李思东,洪鹏志,杨磊,李程鹏,佘晓东.气氛对壳聚糖及其铜离子混合物热降解的影响[J].化学与生物工程,2009,26(8):32-35. |
| |
| 作者姓名： | 欧春艳 李思东 洪鹏志 杨磊 李程鹏 佘晓东 |
| |
| 作者单位： | 广东海洋大学理学院,广东,湛江,524088 |
| |
| 基金项目： | 广东省科技计划重大资助项目 |
| |
| 摘 要： | 利用热重分析(TGA)和差热分析(DTA)研究了壳聚糖及其铜离子混合物在氮气气氛和空气气氛中的热降解行为,探讨了气氛对壳聚糖及其铜离子混合物热降解的影响,并采用FTIR、X-射线衍射对壳聚糖铜离子混合物进行了表征.结果显示,壳聚糖及其铜离子混合物的热降解和热氧降解分三个阶段进行:第一阶段为材料失水,为吸热反应;第二阶段为主链脱乙酰和糖苷键的裂解,为放热反应;第三阶段为吡喃环的裂解和炭化残渣的分解,为放热反应.气氛对壳聚糖第一、第二阶段的降解影响较小,对第三阶段的降解影响较大.
|
| 关 键 词： | 壳聚糖 铜离子 热降解 热氧降解 |
Effect of Atmosphere on Thermal Degradation of Chitosan and Its Cupric Ion Compound |
| |
| OU Chun-yan,LI Si-dong,HONG Peng-zhi,YANG Lei,LI Cheng-peng,SHE Xiao-dong.Effect of Atmosphere on Thermal Degradation of Chitosan and Its Cupric Ion Compound[J].Chemistry & Bioengineering,2009,26(8):32-35. |
| |
| Authors: | OU Chun-yan LI Si-dong HONG Peng-zhi YANG Lei LI Cheng-peng SHE Xiao-dong |
| |
| Affiliation: | OU Chun-yan,LI Si-dong,HONG Peng-zhi,YANG Lei,LI Cheng-peng,SHE Xiao-dong (College of Science,Guangdong Ocean University,Zhanjiang 524088,China) |
| |
| Abstract: | The thermal degradation process of chitosan and its cupric ion compound in nitrogen and in air have been studied by thermogravimetry analysis(TGA) and differential thermal analysis(DTA).The effect of atmosphere on the thermal degradation behaviors of chitosan and its cupric ion compound is discussed.Fourier transform-infrared(FTIR) and X-ray diffractogram(XRD) analysis are utilized to determine the microstructure of chitosan-cupric ion compound.The results show that the thermal degradation of chitosan and i... |
| |
| Keywords: | chitosan cupric ion thermal degradation thermal oxidative degradation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
