关键词:  , &beta, -环糊精, 1-甲基环丙烯, 非等温热重法, 热分解动力学, 包结物

Abstract: The inclusion complex of 1-methylcyclopropene with β-cyclodextrin was prepared and characterized with X-ray powder diffraction and IR absorption spectrometry. The differences of the inclusion complex were compared in spectral characteristics, which confirmed the formation of the inclusion complex. The thermal decomposition kinetics of β-cyclodextrin and 1-methylcyclopropene inclusion complex has been studied with non-isothermal thermogravimetry. The experimental results showed that the reaction order of thermal decomposition ofβ-cyclodextrin and 1-methylcyclopropene is less than one. The average activation energies of the thermal decomposition calculated with Ozawa(Ⅰ) method and Reich method are 101.06kJ/mol and 100.71kJ/mol respectively. The small value of Ea showed that there are no strong chemical interactions between β-CD and 1- MCP. This is consistent with the reports that the stable energy of inclusion complexes of β-CD with weakly polar guest molecules is mainly Van der Waals interaction.

Key words:  , &beta, -cyclodextrin； 1-methylcyclopropene； non-isothermal thermogravimetry； thermal decomposition kinetics； inclusion complex；