Variations in mechanical and thermal properties of mesoporous alumina thin films due to porosity and ordered pore structure

Tae Jung Ha, Hyung-Ho Park, Eul Son Kang, Sangwoo Shin, Hyung Hee Cho

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Ordered mesoporous aluminum oxide films with porosity ranging between 5% and 37% were synthesized by evaporation-induced self-assembly (EISA) using surfactant templating. To investigate the effects of mesoporous structure on thermal properties, changes in pore structure including pore size, pore distribution, and porosity were monitored as a function of surfactant concentration (Pluronic P-123, poly(ethylene oxide)20-poly(propylene oxide)70-poly(ethylene oxide)20). The ordered mesoporous alumina films were then examined to determine how their morphology influences their thermal properties. These alumina films had a body-centered cubic pore structure or a random-oriented pore structure, depending on the surfactant concentration used, and superior thermal properties were obtained by controlling porosity and pore structure. Therefore, the ordered mesoporous alumina films synthesized in this study can be used as high-temperature thermo-isolating materials.

Original languageEnglish
Pages (from-to)120-124
Number of pages5
JournalJournal of Colloid and Interface Science
Volume345
Issue number1
DOIs
Publication statusPublished - 2010 May 1

Fingerprint

Aluminum Oxide
Pore structure
Alumina
Thermodynamic properties
Porosity
Surface-Active Agents
Thin films
Mechanical properties
Surface active agents
Polyethylene oxides
Poloxamer
Self assembly
Oxide films
Pore size
Evaporation
Aluminum
Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

Cite this

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abstract = "Ordered mesoporous aluminum oxide films with porosity ranging between 5{\%} and 37{\%} were synthesized by evaporation-induced self-assembly (EISA) using surfactant templating. To investigate the effects of mesoporous structure on thermal properties, changes in pore structure including pore size, pore distribution, and porosity were monitored as a function of surfactant concentration (Pluronic P-123, poly(ethylene oxide)20-poly(propylene oxide)70-poly(ethylene oxide)20). The ordered mesoporous alumina films were then examined to determine how their morphology influences their thermal properties. These alumina films had a body-centered cubic pore structure or a random-oriented pore structure, depending on the surfactant concentration used, and superior thermal properties were obtained by controlling porosity and pore structure. Therefore, the ordered mesoporous alumina films synthesized in this study can be used as high-temperature thermo-isolating materials.",
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Variations in mechanical and thermal properties of mesoporous alumina thin films due to porosity and ordered pore structure. / Ha, Tae Jung; Park, Hyung-Ho; Kang, Eul Son; Shin, Sangwoo; Cho, Hyung Hee.

In: Journal of Colloid and Interface Science, Vol. 345, No. 1, 01.05.2010, p. 120-124.

Research output: Contribution to journalArticle

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