High Permittivity Nanocomposites Embedded with Ag/TiO2 Core–Shell Nanoparticles Modified by Phosphonic Acid
| العنوان: | High Permittivity Nanocomposites Embedded with Ag/TiO2 Core–Shell Nanoparticles Modified by Phosphonic Acid |
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| المؤلفون: | Fei Liang, Zheng Jin, Ming Fu, Yifei Zhao, Wen-Zhong Lu, Xizi Chen |
| المصدر: | Polymers Polymers; Volume 10; Issue 6; Pages: 586 Polymers, Vol 10, Iss 6, p 586 (2018) |
| بيانات النشر: | MDPI, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Permittivity, Thermogravimetric analysis, core–shell structure, interfacial modification, dielectric properties, nanocomposites, Materials science, Polymers and Plastics, Nanoparticle, 02 engineering and technology, Dielectric, 010402 general chemistry, 01 natural sciences, Article, lcsh:QD241-441, lcsh:Organic chemistry, Fourier transform infrared spectroscopy, Nanocomposite, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Chemical engineering, Chemical bond, 0210 nano-technology, Dispersion (chemistry) |
| الوصف: | In this paper, nanocomposites that contain core-shell Ag/TiO2 particles as the filler and polytetrafluoroethylene (PTFE) as the matrix were investigated. Two surfactants, namely octyl phosphonic acid (OPA) and pentafluorobenzyl phosphonic acid (PFBPA), were applied to modify Ag/TiO2 fillers for uniform dispersion in the matrix. Fourier transform infrared spectroscopy analysis of bonds between the TiO2 shells and the phosphonic modifiers shows Ti–O–P chemical bonding between the Ag/TiO2 fillers and the modifiers. Thermogravimetric analysis results show a superior adsorption effect of PFBPA over OPA on the Ag/TiO2 filler surface at the same weight percentage. For nanocomposites that contain modified Ag/TiO2 nanoparticles, the loss was reduced despite the high permittivity at the same loading. The permittivity of the nanocomposites by PFBPA is larger than that of OPA, because the more uniform dispersion of inorganic particles in the PTFE matrix enhances the interfacial polarization effect. The mechanism of enhanced dielectric performance was studied and discussed. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2073-4360 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5381f12f2396d140598c472e7de19683Test http://europepmc.org/articles/PMC6403823Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5381f12f2396d140598c472e7de19683 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20734360 |
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