1. Comparison in thermal behaviors of homologues, derivatives and adducts of β-cyclodextrin
- Author
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Zhu, Lin Hong, Song, Le Xin, Guo, Xue Qing, and Dang, Zheng
- Subjects
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CYCLODEXTRINS , *THERMOGRAVIMETRY , *GLUCOSE , *CHEMICAL decomposition , *GAS chromatography/Mass spectrometry (GC-MS) , *CARBOHYDRATES , *HIGH temperatures , *SODIUM arsenite - Abstract
Abstract: The thermal behaviors of homologues, derivatives and adducts of β-cyclodextrin (β-CD) are compared based on thermogravimetry (TG) and gas chromatography coupled to time-of-flight mass spectrometry (GC–TOF-MS) analysis. Our results indicate that the number of glucose units and the introduced groups cause a considerable change in thermal decomposition mechanisms of these carbohydrates. Further, it is observed that the mass loss of the bicomponent aggregate formed by phenylarsonic acid (PAA) and β-CD is larger than that of each of the components at higher temperatures. Additionally, the decomposition of the adduct produces a series of arsenic compounds with high relative abundances, such as AsO+, As2O2 +, As3O4 + and As4O6 +, which is rather different from the decomposition behaviors of free PAA and the adduct of β-CD with sodium arsenite. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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