Fırat Üniversitesi
FF.18.18
Three different composites (5, 10, and 20 wt. %) were prepared using purified PVC and POH-g-N3PTMS-g-Fe3O4. Firstly, 3-azidopropyltrimethoxysilane was synthesized under reflux from 3-chlorotrimethoxysilane and sodium azide. Then, magnetic nanoparticle was bonded with the silane group of 3-azidopropyltrimethoxysilane. After that the 3-azidopropyltrimethoxysilane bearing magnetic nanoparticle undergo click reaction with propargyl alcohol, and then the composites were prepared. Some characterization, including FT-IR spectroscopy, SEM, Differential scanning calorimetry (DSC), vibrating sample magnetometer (VSM), and EDX images was performed to the composites. The DSC measurements showed that the click reaction of the 3-azidopropyltrimethoxysilane graft magnetic nanoparticles (N3PTMS-g-Fe3O4) reduced the glass transition temperature (Tg). Click reaction reduced the thermal stability of N3PTMS-g-Fe3O4. The thermal stabilities of the composites increased by increasing the compositional rate. It was found that the 10% PVC /POH-g-N3PTMS-g-Fe3O4 reached saturation magnetization (Ms) at 5.12 emu/g. The dielectric constant (ε´) and dielectric loss (″) of POH-g-N3PTMS-g-Fe3O4 rapidly decreased with increasing applied frequency and then remain more or less constant. Also, the AC conductivity (ac) increased sharply with increasing the applied frequency. While the ε´ decreased slightly for the composites by increasing the applied frequency and the ac increase dramatically with an increase in applied frequency at room temperature.
FF.18.18
Birincil Dil | İngilizce |
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Bölüm | Natural Sciences |
Yazarlar | |
Proje Numarası | FF.18.18 |
Yayımlanma Tarihi | 25 Haziran 2020 |
Gönderilme Tarihi | 7 Nisan 2020 |
Kabul Tarihi | 4 Haziran 2020 |
Yayımlandığı Sayı | Yıl 2020Cilt: 41 Sayı: 2 |