【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。更多还原

【Abstract】 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 2.19×1010min-1.Hydroxypropyl-β-cyclodextrins excels β-cyclodextrins in thermal stability,and the decomposition temperature is enhanced about 32℃.更多还原