Macroporous mullite materials prepared by novel shaping strategies based on starch thermogelation for thermal insulation

A rigorous microstructural analysis of porous mullite materials developed using novel shaping strategies based on the starch consolidation casting, and their thermal properties in relation to the processing and starch type were accomplished in view of their use as thermal insulators. In order to cha...

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Bibliographic Details
Published in:International journal of applied ceramic technology 2017-07, Vol.14 (4), p.738-747
Main Authors: Talou, Mariano, Miranzo, Pilar, Camerucci, María Andrea
Format: Article
Language:English
Subjects:
Cassava
Conduction heating
Consolidation
Heat transfer
Insulation
Insulators
Mean free path
Microstructural analysis
microstructure
Mullite
Porosity
Porous materials
thermal conductivity
Thermal insulation
Thermodynamic properties
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Summary:A rigorous microstructural analysis of porous mullite materials developed using novel shaping strategies based on the starch consolidation casting, and their thermal properties in relation to the processing and starch type were accomplished in view of their use as thermal insulators. In order to characterize the size and morphology of pore, basic size and 2D shape factors, and global 3D stereological parameters were determined using microscopy techniques. Results indicated that the porosity volume, pore connectivity degree, and mean free path were the determining factors of the lowest heat transfer by conduction registered in materials prepared with cassava starch. This material is the best candidate to be used in thermal insulation.
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.12673