Thermal behaviour of starch and oxidized starch

Thermal gravimetric analysis, and differential thermal behaviour of unoxidized and oxidized starch were studied. Degradation was found to be first order in sample weight reaction. The activation energy values and the rate constants were calculated from the kinetic of weight loss. Unoxidized starch w...

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Published inThermochimica acta Vol. 296; no. 1; pp. 149 - 153
Main Authors Soliman, Aisha A.A., El-Shinnawy, Nabila A., Mobarak, Fardous
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.1997
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Abstract Thermal gravimetric analysis, and differential thermal behaviour of unoxidized and oxidized starch were studied. Degradation was found to be first order in sample weight reaction. The activation energy values and the rate constants were calculated from the kinetic of weight loss. Unoxidized starch was found to be less stable than oxidized starch and the stability of the samples was arranged in the order of oxidized starch with 8 g active Cl l > 4 g active Cl l > 6 g active Cl l > unoxidized starch . Volatilization and activation energies of oxidized starch were higher than unoxidized starch. DTA of unoxidized and oxidized starch show that the degradation is exothermic.
AbstractList Thermal gravimetric analysis, and differential thermal behaviour of unoxidized and oxidized starch were studied. Degradation was found to be first order in sample weight reaction. The activation energy values and the rate constants were calculated from the kinetic of weight loss. Unoxidized starch was found to be less stable than oxidized starch and the stability of the samples was arranged in the order of oxidized starch with 8 g active Cl l > 4 g active Cl l > 6 g active Cl l > unoxidized starch . Volatilization and activation energies of oxidized starch were higher than unoxidized starch. DTA of unoxidized and oxidized starch show that the degradation is exothermic.
Author Soliman, Aisha A.A.
Mobarak, Fardous
El-Shinnawy, Nabila A.
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Cites_doi 10.1139/v71-101
10.1080/00222358108080014
10.1016/0040-6031(80)87140-1
10.1002/pol.1973.170111205
10.1002/star.19890410804
10.1002/app.1970.070140518
10.6028/jres.056.045
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Keywords Gravimetric analysis
Starch
Thermal
Language English
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SubjectTerms Gravimetric analysis
Starch
Thermal
Title Thermal behaviour of starch and oxidized starch
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