Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 118, Issue 2, Pages 961-966Publisher
SPRINGER
DOI: 10.1007/s10973-014-3727-1
Keywords
Modified cyclodextrin; Thermal behavior; EGA study; Encapsulation agent; Iodine
Funding
- University of Medicine and Pharmacy 'Victor Babes' Timisoara [PIII-C1-CFI-2014/2015-03]
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Thermal behaviour of heptakis-6-iodo-6-deoxy-beta-cyclodextrin (HIDBCD) under inert and oxidative conditions was investigated by TG/DTG/DTA, FTIR, and using the hyphenate technique TG-FTIR. Due to the fact that thermal behaviour of HIDBCD was not studied before, we set our goal in the investigation of thermal degradation process in a dynamic air atmosphere vs. nitrogen atmosphere at a heating rate of 10 A degrees C min(-1), up to 500 A degrees C, respectively, 600 A degrees C. It was found that the degradation process in air occurs in a single step, with a total mass loss of 99.9 %. The results of TG/DTG/DTA-FTIR indicated that the thermal behaviour of this cyclodextrin can be divided into three stages and more information was provided about the reaction sequences and the relevant products of reaction.
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