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The stability of 13-cyclodextrin-cinnamyl alcohol inclusion complex (~CD.C9Hlo.SH20) was investigated using TG and DSC. The mass loss took place in three stages: the dehydration occurred between 50--120~ the dissociation of [3-CD.CgH~00 occurred in the range of 210-260~ and the decomposition of ~CD began at 280~ The dissociation of ~CD.CgH100 was studied by means of thermogravimetry, and the results showed: the dissociation of 13-CD.C9H1oO was dominated by a two-dimensional diffusion process (Dz). The activation energy E was 161.2 kJ molt, the pre-exponential factor A was 4.5x10 n min -x.Cyclodextrin is able to form inclusion complexes with a great variety of guest molecules, and the interesting of studies focussed on the energy binding eyclodextrin and the guest molecule.In this paper, ~cyclodextrin-cinnamyl alcohol inclusion complex was studied by fluorescence spectrophotometry and infrared absorption spectroscopy, and the results show: the stable energy of inclusion complexes of ~CD with weakly polar guest molecules consists mainly of Van der Waals interaction.

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The thermal decomposition kinetics of polyurethane/polyethyl acrylate interpenetrating polymer networks (PU/PEA IPN) were studied by means of thermogravimetry and derivative thermogravimetry (TG-DTG), and compared with those of polyurethane (PU) and polyethyl acrylate (PEA). The decomposition temperature (Ti) of PU/PEA IPN was found to be higher than T i of PEA, but lower than T~ of PU. Thermal decomposition kinetic parameters, n and E, estimated using Coats-Redfern method, are found for PU/PEA IPN, PU and PEA to be 1.6, t.9 and I. 1, and 196.6, 258.6 and 139.2 kJ mo1-1, respectively. The results show that PIJ/PEA IPN is neither a simple mixture of PU and PEA nor a copolymer of them. The mechanism of thermal decomposition of PU/PEA IPN is different from those of PU and PEA. The special network in PU/PEA IPN effectually protects weak bonds in the molecular chain of PU and PEA,