Geopolymers
Inorganic polymeric new materials
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Anca Moanţă
Anca Moanţă
Faculty of Chemistry, University of Craiova, Calea Bucuresti Str., Nr. 107 I, Craiova, Romania
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Cătălina Ionescu
Cătălina Ionescu
Faculty of Chemistry, University of Craiova, Calea Bucuresti Str., Nr. 107 I, Craiova, Romania
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P. Rotaru
P. Rotaru
Faculty of Physics, University of Craiova, A.I. Cuza Str., Nr. 13, Craiova, Romania petrerotaru@yahoo.com
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Margareta Socaciu
Margareta Socaciu
Faculty of Physics, University of Craiova, A.I. Cuza Str., Nr. 13, Craiova, Romania petrerotaru@yahoo.com
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Ana Hărăbor
Ana Hărăbor
Faculty of Physics, University of Craiova, A.I. Cuza Str., Nr. 13, Craiova, Romania petrerotaru@yahoo.com
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Abstract
Using the Williamson method, a new dye 4-[(4-chlorobenzyl)oxy]-3,4′-dichloroazobenzene (CODA) with liquid crystalline properties was synthesized. The structure and the thermal behavior of CODA were investigated by means of nuclear magnetic resonance, X-ray diffraction, differential scanning calorimetry, and light polarized optical microscopy techniques. The thermophysical processes were monitored by heating–cooling cycles, but the formation of liquid crystal phases were exhibited only for small values of the cooling rates. For the first heating–cooling cycle, the melting and the solidification processes, thus the characteristic temperatures, are shifted to higher values when compared to the following cycles.
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| Journal of Thermal Analysis and Calorimetry | |
|---|---|
| Language | English |
| Size | A4 |
| Year of Foundation |
1969 |
| Volumes per Year |
1 |
| Issues per Year |
24 |
| Founder | Akadémiai Kiadó |
| Founder's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. |
| Publisher | Akadémiai Kiadó Springer Nature Switzerland AG |
| Publisher's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11. |
| Responsible Publisher |
Chief Executive Officer, Akadémiai Kiadó |
| ISSN | 1388-6150 (Print) |
| ISSN | 1588-2926 (Online) |
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Temperature dependence of the rate of reaction in thermal analysis
The Arrhenius equation in condensed phase kinetics
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