PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix
2021
Аутори
Pavlović, Vera P.Tošić, Dragana
Dojčilović, Radovan
Dudić, Duško
Dramićanin, Miroslav
Medić, Mina
McPherson, Michael M.
Pavlović, Vladimir B.
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 beta- and gamma-crystals, while there is also a contribution of the non-polar a-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 similar to 2 kHz, the observed process appears at similar to 10 degrees C (about 45 degr...ees 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 degrees C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and similar to 50 kHz.
Кључне речи:
PVDF-HFP / Perovskite / NKBT / Dielectric relaxation spectroscopy / CompositeИзвор:
Polymer Testing, 2021, 96Издавач:
- Elsevier Sci Ltd, Oxford
Финансирање / пројекти:
- NSF CREST [HRD-0833184]
- NSF [1523617]
- Утицај величине, облика и структуре наночестица на њихова својства и својства нанокомпозита (RS-MESTD-Basic Research (BR or ON)-172056)
- Материјали редуковане димензионалности за ефикасну апсорпцију светлости и конверзију енергије (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Проучавање утицаја третирања на диелектричне, оптичке, магнетне и особине површина кристалних и полимерних система (RS-MESTD-Basic Research (BR or ON)-171029)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200105 (Универзитет у Београду, Машински факултет) (RS-MESTD-inst-2020-200105)
DOI: 10.1016/j.polymertesting.2021.107093
ISSN: 0142-9418
WoS: 000663792300029
Scopus: 2-s2.0-85100677797
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Pavlović, Vera P. AU - Tošić, Dragana AU - Dojčilović, Radovan AU - Dudić, Duško AU - Dramićanin, Miroslav AU - Medić, Mina AU - McPherson, Michael M. AU - Pavlović, Vladimir B. AU - Vlahović, Branislav AU - Djoković, Vladimir PY - 2021 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3600 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 beta- and gamma-crystals, while there is also a contribution of the non-polar a-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 similar to 2 kHz, the observed process appears at similar to 10 degrees C (about 45 degrees 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 degrees C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and similar to 50 kHz. PB - Elsevier Sci Ltd, Oxford T2 - Polymer Testing T1 - PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix VL - 96 DO - 10.1016/j.polymertesting.2021.107093 ER -
@article{ author = "Pavlović, Vera P. and Tošić, Dragana and Dojčilović, Radovan and Dudić, Duško and Dramićanin, Miroslav and Medić, Mina and McPherson, Michael M. and Pavlović, Vladimir B. 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 beta- and gamma-crystals, while there is also a contribution of the non-polar a-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 similar to 2 kHz, the observed process appears at similar to 10 degrees C (about 45 degrees 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 degrees C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and similar to 50 kHz.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Polymer Testing", title = "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix", volume = "96", doi = "10.1016/j.polymertesting.2021.107093" }
Pavlović, V. P., Tošić, D., Dojčilović, R., Dudić, D., Dramićanin, M., Medić, M., McPherson, M. M., Pavlović, V. B., 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 Sci Ltd, Oxford., 96. https://doi.org/10.1016/j.polymertesting.2021.107093
Pavlović VP, Tošić D, Dojčilović R, Dudić D, Dramićanin M, Medić M, McPherson MM, Pavlović VB, 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. doi:10.1016/j.polymertesting.2021.107093 .
Pavlović, Vera P., Tošić, Dragana, Dojčilović, Radovan, Dudić, Duško, Dramićanin, Miroslav, Medić, Mina, McPherson, Michael M., Pavlović, Vladimir B., 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), https://doi.org/10.1016/j.polymertesting.2021.107093 . .