Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea.
J Colloid Interface Sci. 2010 May 1;345(1):120-4. doi: 10.1016/j.jcis.2010.01.028. Epub 2010 Jan 18.
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.
采用蒸发诱导自组装（EISA）法，利用表面活性剂模板合成了孔率在 5%到 37%之间的有序介孔氧化铝薄膜。为了研究介孔结构对热性能的影响，我们监测了孔结构的变化，包括孔径、孔分布和孔率，这些变化与表面活性剂浓度（Pluronic P-123，聚（氧化乙烯）（20）-聚（氧化丙烯）（70）-聚（氧化乙烯）（20））有关。然后，我们对有序介孔氧化铝薄膜进行了检查，以确定其形态如何影响其热性能。这些氧化铝薄膜具有体心立方孔结构或无定形孔结构，这取决于所使用的表面活性剂浓度，通过控制孔隙率和孔结构可以获得优异的热性能。因此，本研究中合成的有序介孔氧化铝薄膜可用作高温隔热材料。
