Geopolymers
Inorganic polymeric new materials
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Vijayakumar Sarannya
Vijayakumar Sarannya
Post-graduate Department of Chemistry, Ayya Nadar Janaki Ammal College (Autonomous), Sivakasi 626124, India
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Palanichamy Sivasamy
Palanichamy Sivasamy
Post-graduate Department of Chemistry, Ayya Nadar Janaki Ammal College (Autonomous), Sivakasi 626124, India
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Nagarajan David Mathan
Nagarajan David Mathan
Department of Polymer Technology, Kamaraj College of Engineering and Technology, S.P.G.C. Nagar, K. Vellakulam Post, Virudhunagar 625701, India
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Thangamani Rajkumar
Thangamani Rajkumar
Department of Polymer Technology, Kamaraj College of Engineering and Technology, S.P.G.C. Nagar, K. Vellakulam Post, Virudhunagar 625701, India
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Durairaj Ponraju
Durairaj Ponraju
Radiological Safety Division, Department of Atomic Energy, IGCAR, Kalpakkam 603102, India
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Chinnaswamy Thangavel Vijayakumar
Chinnaswamy Thangavel Vijayakumar
Department of Polymer Technology, Kamaraj College of Engineering and Technology, S.P.G.C. Nagar, K. Vellakulam Post, Virudhunagar 625701, India
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Abstract
Bicyclic compounds containing phosphorus on their skeleton such as 2,4,6-trioxa-1-phosphabicyclo[2,2,2]octane-4-methanol phosphate (PEPA) having three active ingredients required for intumescence have been synthesized. The structural characterization of PEPA was carried out by FT-IR, 1H and 13C NMR. The thermal behaviour of the material was studied using TGA, TGA–MS and pyrolysis GC–MS. Thermogravimetric analysis reveals that PEPA undergoes several stages of degradation with a char of about 12% at 800 °C. The TGA–MS studies indicate that the material degrades with the liberation of water, formaldehyde, alkene and alcohols as the major degradation products. Pyrolysis GC–MS results reveal that PEPA isomerizes in the acidic medium. PEPA and/or isomers of PEPA react with formaldehyde, one of the degradation products, to form cross-linked structure and cyclic products with the elimination of water molecule. The thermal degradation mechanisms for PEPA are presented and discussed.
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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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