Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofiller
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...
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-01-01
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| Series: | Alexandria Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110016823010980 |
| _version_ | 1827370672260644864 |
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| author | Lijun Wang |
| author_facet | Lijun Wang |
| author_sort | Lijun Wang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-08T10:20:01Z |
| format | Article |
| id | doaj.art-ad0753aeb68642f98e98c4fc3caac7bd |
| institution | Directory Open Access Journal |
| issn | 1110-0168 |
| language | English |
| last_indexed | 2024-03-08T10:20:01Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Alexandria Engineering Journal |
| spelling | doaj.art-ad0753aeb68642f98e98c4fc3caac7bd2024-01-28T04:19:24ZengElsevierAlexandria Engineering Journal1110-01682024-01-01875662Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofillerLijun Wang0College of Materials and Chemical Engineering, Zibo Vocational Institute, Zibo, Shandong 255300, ChinaThis 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.http://www.sciencedirect.com/science/article/pii/S1110016823010980La2NiO4CuOSiCNanocompositesDielectric propertiesInterfacial polarization |
| spellingShingle | Lijun Wang Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofiller Alexandria Engineering Journal La2NiO4 CuO SiC Nanocomposites Dielectric properties Interfacial polarization |
| title | Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofiller |
| title_full | Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofiller |
| title_fullStr | Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofiller |
| title_full_unstemmed | Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofiller |
| title_short | Enhancement of dielectric properties of the La2NiO4-CuO terpolymer nanocomposites by modified SiC nanofiller |
| title_sort | enhancement of dielectric properties of the la2nio4 cuo terpolymer nanocomposites by modified sic nanofiller |
| topic | La2NiO4 CuO SiC Nanocomposites Dielectric properties Interfacial polarization |
| url | http://www.sciencedirect.com/science/article/pii/S1110016823010980 |
| work_keys_str_mv | AT lijunwang enhancementofdielectricpropertiesofthela2nio4cuoterpolymernanocompositesbymodifiedsicnanofiller |