【摘要】 用热分析(TG/DTA/DSC)技术研究了消旋卡多曲(C21H21NO4S)在空气中的热分解过程.热分析结果表明,消旋卡多曲在空气中一步分解,其熔点为77.4℃.用Friedman法,Flynn-Wall-Ozawa(FWO)法和ASTME698法求取了分解过程的活化能E,并通过多元线性回归法给出了可能的机理函数.更多还原

【Abstract】 The thermal decomposition processes taking place in the solid-state racecadotril have been stud- ied in air using TG-DTG/DTA and DSC techniques. TG-DTG/DTA and DSC curves showed that the de- composition proceeded through a well-defined step in air with the melting point of 77.4 ℃ . The activation energies were calculated through the Friedman, Flynn-Wall-Ozawa and ASTM E698 methods, and the pos- sible conversion functions were estimated through the multiple-linear regression method.更多还原