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The Effect of some Nitrate Salts on the Thermal Behaviour of Amylose
Author(s) -
Desai D. H.,
Patel C. K.,
Patel K. C.,
Patel R. D.
Publication year - 1972
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19720240203
Subject(s) - thermogravimetric analysis , thermal decomposition , differential thermal analysis , chemistry , decomposition , exothermic reaction , nitrate , salt (chemistry) , amylose , catalysis , inorganic chemistry , thermogravimetry , organic chemistry , starch , physics , diffraction , optics
In the course of a series of thermo‐analytical investigations on amylose, attention has been focused on the acid salt catalysts. Studies on the sequence and nature of the chemical changes occuring in amylose during heating have been carried out by using differential thermal analysis (DTA) and thermogravimetric analysis (TGA). A strongly exothermic reaction, with some nitrate salts, was observed accompained by a rapid weight loss, not characteristic of any one of the substances in the mixtures. The exothermic decomposition could be explained as an oxidative attack of NO 2 on amylose, the former being produced by thermal decomposition of the nitrate salt. The kinetic parameters obtained from DTA are in accord with the results derived from TGA for the catalytic decomposition of amylose.