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Journal of thermal analysis

, Volume 49, Issue 3, pp 1517–1525 | Cite as

Kinetic studies on the thermal dissociation of β-cyclodextrin-cinnamyl alcohol inclusion complex

  • Shou-Zhi Yu
  • Xiao-Tao Li
  • Jing-Hua Li
  • Jin-Yun Wang
  • Sheng-Jun Tian
Kinetics

Abstract

The stability of β-cyclodextrin-cinnamyl alcohol inclusion complex (β-CD·C9H10·8H2O) was investigated using TG and DSC. The mass loss took place in three stages: the dehydration occurred between 50–120°C; the dissociation of β-CD·C9H10O occurred in the range of 210–260°C; and the decomposition of β-CD began at 280°C. The dissociation of β-CD·C9H10O was studied by means of thermogravimetry, and the results showed: the dissociation of β-CD·C9H10O was dominated by a two-dimensional diffusion process (D2). The activation energyE was 161.2 kJ mol−1, the pre-exponential factorA was 4.5×1013 min−1.

Cyclodextrin is able to form inclusion complexes with a great variety of guest molecules, and the interesting of studies focussed on the energy binding cyclodextrin and the guest molecule.

In this paper, β-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 β-CD with weakly polar guest molecules consists mainly of Van der Waals interaction.

Keywords

β-cyclodextrin cinnamyl alcohol kinetics thermal analysis 

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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • Shou-Zhi Yu
    • 1
  • Xiao-Tao Li
    • 1
  • Jing-Hua Li
    • 1
  • Jin-Yun Wang
    • 1
    • 2
  • Sheng-Jun Tian
    • 1
  1. 1.Department of ChemistryHenan Normal UniversityXinxiangP. R. China
  2. 2.Department of ChemistryUniversity of ConnecticutStorrsUSA

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