PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix
Само за регистроване кориснике
2021
Аутори
Pavlović, Vera P.Tošić, Dragana
Dojćilović, Radovan
Dudić, Duško
Dramićanin, Miroslav D.
Medić, Mina
McPherson, Michael M.
Pavlović, Vladimir
Vlahović, Branislav
Djoković, Vladimir
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperatur...e) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz.
Кључне речи:
Composite / Dielectric relaxation spectroscopy / NKBT / Perovskite / PVDF-HFPИзвор:
Polymer Testing, 2021, 96, 107093-Издавач:
- Elsevier Ltd
Финансирање / пројекти:
- Материјали редуковане димензионалности за ефикасну апсорпцију светлости и конверзију енергије (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Утицај величине, облика и структуре наночестица на њихова својства и својства нанокомпозита (RS-MESTD-Basic Research (BR or ON)-172056)
- Проучавање утицаја третирања на диелектричне, оптичке, магнетне и особине површина кристалних и полимерних система (RS-MESTD-Basic Research (BR or ON)-171029)
DOI: 10.1016/j.polymertesting.2021.107093
ISSN: 0142-9418
WoS: 000663792300029
Scopus: 2-s2.0-85100677797
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Pavlović, Vera P. AU - Tošić, Dragana AU - Dojćilović, Radovan AU - Dudić, Duško AU - Dramićanin, Miroslav D. AU - Medić, Mina AU - McPherson, Michael M. AU - Pavlović, Vladimir AU - Vlahović, Branislav AU - Djoković, Vladimir PY - 2021 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/5808 AB - Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz. PB - Elsevier Ltd T2 - Polymer Testing T1 - PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix SP - 107093 VL - 96 DO - 10.1016/j.polymertesting.2021.107093 ER -
@article{ author = "Pavlović, Vera P. and Tošić, Dragana and Dojćilović, Radovan and Dudić, Duško and Dramićanin, Miroslav D. and Medić, Mina and McPherson, Michael M. and Pavlović, Vladimir and Vlahović, Branislav and Djoković, Vladimir", year = "2021", abstract = "Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz.", publisher = "Elsevier Ltd", journal = "Polymer Testing", title = "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix", pages = "107093", volume = "96", doi = "10.1016/j.polymertesting.2021.107093" }
Pavlović, V. P., Tošić, D., Dojćilović, R., Dudić, D., Dramićanin, M. D., Medić, M., McPherson, M. M., Pavlović, V., Vlahović, B.,& Djoković, V.. (2021). PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing Elsevier Ltd., 96, 107093. https://doi.org/10.1016/j.polymertesting.2021.107093
Pavlović VP, Tošić D, Dojćilović R, Dudić D, Dramićanin MD, Medić M, McPherson MM, Pavlović V, Vlahović B, Djoković V. PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing. 2021;96:107093. doi:10.1016/j.polymertesting.2021.107093 .
Pavlović, Vera P., Tošić, Dragana, Dojćilović, Radovan, Dudić, Duško, Dramićanin, Miroslav D., Medić, Mina, McPherson, Michael M., Pavlović, Vladimir, Vlahović, Branislav, Djoković, Vladimir, "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix" in Polymer Testing, 96 (2021):107093, https://doi.org/10.1016/j.polymertesting.2021.107093 . .