摘要
目的:研究桃叶珊瑚苷的热特征。方法:用热重法测量了桃叶珊瑚苷的热失重曲线,并用 Kissinger 法计算了其表观活化能;用差示扫描量热法测量了桃叶珊瑚苷的多晶型变化;并用红外吸收光谱和 X-射线衍射图谱进行了佐证。结果:桃叶珊瑚苷有多晶型现象,其熔融时发生晶态变化并伴随分解。利用热失重法测得的表观活化能为138.75kJ·mol^(-1)。结论:获得了桃叶珊瑚苷的热力学特征,为该化合物的应用进行了基础研究。
Objective： To study the thermal property of aucubin. Methods： The thermal property of aucubin was investigated by using differential scanning calorimetry （ DSC ） and thermal gravimetry （TG） in the temperature range of 30 -250 ℃ and the different heating rate. The structure of aucubin was characterized by fouriertransform infrared spectra（FTIR） and X- ray powder diffraction. Results：Aucubin is a polymorphous material,which crystal forms changed and decomposed in the course of melting. The activation energy was 138.75 kJ · mol^- 1 and determined by TG according to the Kissinger＇s equation. Conclusion： The thermal property of aucubin obtained gives references for it＇s preparation study.
出处
《药物分析杂志》
CAS
CSCD
北大核心
2006年第6期734-736,共3页
Chinese Journal of Pharmaceutical Analysis
关键词
桃叶珊瑚苷
热重法
差示扫描量热法
aucubin
thermal gravimetry
differential scanning calorimetry
