摘要
用热重/差热分析研究了羟丙基-β-环糊精的热稳定性,其分解温度为367℃左右。通过动力学分析确定其活化能为EA=149.15kJ/mol,指前因子k0=2.19×1010min-1。对比β-环糊精、羟丙基-β-环糊精的热重/差热曲线发现,羟丙基-β-环糊精的热稳定性优于β-环糊精,热分解温度提高32℃左右。
The thermal stability of hydroxypropyl - β - cyclodextrins was studied by thermogravimetry / differential thermal analysis. The obtained decomposition temperature of hydroxypropyl - β - cyclodextrins is about 367℃. The result of thermal decomposition kinetics investigation reveals that the activation energy EA is 149.15kJ/mol and the pre - exponential factor is 2.19 × 10^10min^-1. Hydroxypropyl - β - eyelodextrins excels β - cyclodextrins in thermal stability, and the decomposition temperature is enhanced about 32℃.
出处
《中国粮油学报》
EI
CAS
CSCD
北大核心
2007年第3期59-61,共3页
Journal of the Chinese Cereals and Oils Association
关键词
羟丙基-Β-环糊精
热稳定性
分解动力学
热重/差热分析
hydroxypropyl - β - cyclodextrin, thermal stability, decomposition kinetics, thermogravimetry /differential thermal analysis
