Thermoanalytical method for studying the guest content in cyclodextrin inclusion complexes

Judit Orgoványi, L. Pöppl, Klára H.-Otta, G. A. Lovas

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The interaction of cypermethrin with β-cyclodextrin was investigated using different (coprecipitation, suspension, kneading and 'melting in solution') complexation methods and qualifying the resulted complexes by UV-spectrophotometry, thermal methods (TG, DTG and DSC) and X-ray powder diffraction. The total guest content of complexes can be measured by UV-spectrophotometry in aqueous ethanol solution, while the uncomplexed guest fraction of samples can be determined by DSC based on a previous calibration curve, which was found between the melting enthalpy change of cypermethrin and the guest content of physical mixture samples. The combination of both analytical methods enables the determination of really complexed guest content.

Original languageEnglish
Pages (from-to)261-266
Number of pages6
JournalJournal of Thermal Analysis and Calorimetry
Volume81
Issue number2
DOIs
Publication statusPublished - Jul 1 2005

Keywords

  • Cyclodextrins
  • Cypermethrin
  • Differential scanning calorimetry
  • Inclusion complexation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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