標題: Preparation and Characterizations of Tantalum Pentoxide (Ta(2)O(5)) Nanoparticles and UV-Curable Ta(2)O(5)-Acrylic Nanocomposites
作者: Huang, Heh-Chang
Hsieh, Tsung-Eong
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 5-八月-2010
摘要: Tantalum pentoxide (Ta(2)O(5)) nanoparticles with the sizes in the range of 20-50 nm were prepared via a chemical route in which the oleic acid (OLEA) was adopted as the surfactant for the synthesis process. X-ray diffraction (XRD) revealed the as-synthesized Ta(2)O(5) transforms from amorphous to hexagonal and ortho-rhombic structures at the temperatures of 700 degrees C and 750 degrees C, respectively, illustrating the suppression of recrystallization temperature of Ta(2)O(5) due to the particle size reduction. UV-curable nanocomposites containing the Ta(2)O(5) nanoparticles and acrylic matrix were also prepared. Thermogravimetry analysis (TGA) found an about 10-20 degrees C improvement on the 5% weight-loss thermal decomposition temperatures (T(d)s). Dielectric measurement showed that the dielectric constant of nanocomposite increases with the increase in the filler loading without severe deterioration of dielectric loss. The increment of dielectric constants was ascribed to the addition of high-dielectric inorganic fillers as well as the presence of interfacial polarization at the organic/inorganic interfaces. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 117: 1252-1259, 2010
URI: http://dx.doi.org/10.1002/app.31709
http://hdl.handle.net/11536/32308
ISSN: 0021-8995
DOI: 10.1002/app.31709
期刊: JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 117
Issue: 3
起始頁: 1252
結束頁: 1259
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