Adsorption and Dehydration of Water Molecules from α, β and γ Cyclodextrins — A Study by TGA Analysis and Gravimetry

Alfred A. Christy

doi:10.4028/www.scientific.net/AMR.1120-1121.886

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Adsorption and Dehydration of Water Molecules from α, β and γ Cyclodextrins — A Study by TGA Analysis and Gravimetry

Abstract:

The adsorption and desorption of water molecules from α, β and γ-cyclodextrins were studied by gravimetric and thermogravimetric analysis. Cyclodextrins like all the other carbohydrates have tendency to adsorb water molecules. However, their cyclic nature tends to affect the adsorption patterns. The cyclic nature of the cyclodextrins facilitates the formation of hydrogen bondings between OH groups of the neighbouring glucose units. The C2(1)-OH forms hydrogen bonding with C3(2)-OH. The extent of the hydrogen bond formation and strength of the hydrogen bond affect the way the adsorption and dehydration of water molecules from cyclodextrins take place.

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Periodical:

Advanced Materials Research (Volumes 1120-1121)

Pages:

886-890

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.886

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Online since:

July 2015

Authors:

Alfred A. Christy*

Keywords:

Adsorption, Cyclodextrins, Glucose, TGA Analysis, Thermal Decomposition

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