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JSIR Vol.67 [2008] >
JSIR Vol.67(12) [December 2008] >
| Title: | Effect of substituents on thermal behavior of some symmetric double schiff’s bases containing a cardo group |
| Authors: | Aghera, V K
Parsania, P H |
| Keywords: | DSC
Kinetic parameters
Symmetric double schiff’s bases
TGA |
| Issue Date: | Dec-2008 |
| Publisher: | CSIR |
| Abstract: | Thermal behavior of symmetric double schiff’s bases containing cardo group has been studied by TGA and DSC techniques
at 10°C/min in nitrogen atmosphere. DSC transitions, thermal stability and kinetic parameters are affected by nature and
position of substituents. Schiff’s bases are thermally stable between 173-272°C and followed either a single step or two steps
degradation (fractional or integral order). Different magnitudes of n, E and A suggested different degradation mechanisms. A
large and negative magnitudes of “S* confirmed highly ordered transition state, while positive magnitudes of “S* confirmed less
ordered transition state. |
| Page(s): | 1083-1087 |
| ISSN: | 0022-4456 |
| Source: | JSIR Vol.67(12) [December 2008]
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