Geopolymers
Inorganic polymeric new materials
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L. H. Blanco
L. H. Blanco
Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No.45-03, Bogotá, Colombia
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O. M. Vargas
O. M. Vargas
Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No.45-03, Bogotá, Colombia
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A. F. Suárez
A. F. Suárez
Facultad de Ingeniería, Universidad Libre, Bogotá, Columbia
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Abstract
In this study, a systematic study of the effect of the temperature on the density and surface tension of HMT (hexamethylentetramine) in water was developed. The density and surface tension were determined at temperatures of 288.15, 293.15, 298.15, 303.15, and 308.15 K. Precise data of surface tension have not been reported previously in literature. From the density measurements, the apparent molar and partial molar volumes were calculated. The apparent molar volume decreases with concentration, the molar partial volume increases with temperature. The surface tension of the aqueous solutions of HMT decreases with concentration. The excess surface concentration was calculated, the values increase with concentration, indicating that the amount of HMT that goes to the interface gas liquid increases at higher concentrations of HMT.
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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 |
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| 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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