Thermal conductivity of concentrated colloids in different states
The thermal conductivity of concentrated colloids in fluid, glass, and gel states was analyzed. SiO2 colloids at 10−31 vol % and Al2O3 colloids at 4.8 vol % in the fluid, the gel, and the glassy states were studied by dynamic light scattering, rheology, and transmission electron microscopy. Thermal...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
May 11, 2010
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The journal of physical chemistry. C, Energy, materials, and catalysis
Year: 2010, Jahrgang: 114, Heft: 21, Pages: 9568-9572 |
| ISSN: | 1932-7455 |
| DOI: | 10.1021/jp910722j |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/jp910722j
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| Verfasserangaben: | Natallia Shalkevich, Andrey Shalkevich, and Thomas Bürgi |
| Zusammenfassung: | The thermal conductivity of concentrated colloids in fluid, glass, and gel states was analyzed. SiO2 colloids at 10−31 vol % and Al2O3 colloids at 4.8 vol % in the fluid, the gel, and the glassy states were studied by dynamic light scattering, rheology, and transmission electron microscopy. Thermal conductivity of the three states was measured as a function of volume fraction. For the fluid and gel states the thermal conductivity increases almost linearly with concentration, reaching roughly 18% enhancement for silica at a volume fraction of 31 vol %. In contrast, in the glass state thermal conductivity strongly decreases with increasing volume fraction. |
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| Beschreibung: | Gesehen am 29.06.2023 |
| Beschreibung: | Online Resource |
| ISSN: | 1932-7455 |
| DOI: | 10.1021/jp910722j |