التفاصيل البيبلوغرافية
| العنوان: |
Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofiller |
| المؤلفون: |
Lijun Wang |
| المصدر: |
Alexandria Engineering Journal, Vol 87, Iss , Pp 56-62 (2024) |
| بيانات النشر: |
Elsevier, 2024. |
| سنة النشر: |
2024 |
| المجموعة: |
LCC:Engineering (General). Civil engineering (General) |
| مصطلحات موضوعية: |
La2NiO4, CuO, SiC, Nanocomposites, Dielectric properties, Interfacial polarization, Engineering (General). Civil engineering (General), TA1-2040 |
| الوصف: |
This work investigates the enhancement of dielectric properties of La2NiO4-CuO terpolymer nanocomposites using surface modified SiC nanoparticles as fillers. SiC nanoparticles were subjected to acid treatment and annealing at 1000 °C to tailor the surface chemistry. Acid treatment involved immersing the SiC powder in a mixture of H2SO4 and HNO3 acids and sonicating for 30 min, followed by stirring at 60 °C for 6 h. Annealing was carried out at 1000 °C for 2 h in an inert argon atmosphere. La2NiO4 and CuO nanoparticles were synthesized by sol-gel and precipitation techniques respectively, with average particle sizes of 20–40 nm and 10–15 nm confirmed by XRD and FESEM. Nanocomposites were fabricated by dispersing 2–10 wt% of untreated, acid treated and annealed SiC nanoparticles in a La2NiO4-CuO mixture solution, using PVDF as the polymer matrix. Impedance spectroscopy revealed that addition of 5 wt% acid treated SiC resulted in the highest dielectric constant of 42 at 1 kHz, in comparison to 25 for the unfilled polymer. This was attributed to increased interfacial polarization arising from uniform dispersion of nanoparticles and abundant charge trapping sites introduced by the SiC filler. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
1110-0168 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S1110016823010980; https://doaj.org/toc/1110-0168 |
| DOI: |
10.1016/j.aej.2023.12.005 |
| URL الوصول: |
https://doaj.org/article/ad0753aeb68642f98e98c4fc3caac7bd |
| رقم الانضمام: |
edsdoj.0753aeb68642f98e98c4fc3caac7bd |
| قاعدة البيانات: |
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