Mechanism and Kinetics of Thermal Dissociation of Inclusion Complex of -Cyclodextrin and 1-Methylcyclopropene

Abstract

The inclusion-complex of CD-MCP (-cyclodextrin (-CD) including 1-methylcyclopropene (1-MCP)) was prepared and characterized. Basing on programmed-heating procedure and weight-temperature analysis, as well as the application of Satava-Sestak's, Ozawa's and Kissinger's methods, the mechanism and kinetics of thermal dissociation of this inclusion complex were studied. An additional mass loss is found at 170180 C. The mechanism of thermal dissociation of CD-MCP is dominated by a one-dimensional random nucleation and subsequent growth process (A2/3). The activation energy ES and the pre-exponential factor AS for the process are 102.14 kJ/mol and 3.63 1010 s1, respectively. This ES value shows that there is no strong chemical interactions between -CD and 1-MCP.