TY  - JOUR
AU  - Vijatović Petrović, Mirjana
AU  - Craciun, Floriana
AU  - Cordero, Francesco
AU  - MERCADELLI, ELISA
AU  - Ilić, Nikola
AU  - Despotovic, Zeljko V.
AU  - Bobić, Jelena
AU  - Džunuzović, Adis
AU  - Galassi, Carmen
AU  - Stagnaro, Paola
AU  - Canu, Giovanna
AU  - Buscaglia, Maria Teresa
AU  - Brunengo, Elisabetta
PY  - 2024
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3211
AB  - In order to further improve the performance of 0.94[(Bi0.5Na0.5)TiO3]-0.06BaTiO3/
polyvinylidene fluoride (NBT-BT/PVDF) flexible composite films prepared by the
hot-pressing method, the effect of surface modification of the NBT-BT particles on
the structure and properties of the films was investigated. Two coupling agents,
namely, (3-aminopropyl)triethoxysilane (APTES) and dodecyl triethoxysilane
(DDTES) were added to enhance dispersion and interfacial adhesion of the active
phase powder with the polymer matrix. The highest amount of the electroactive
PVDF β-phase was formed in APTES-modified samples while in DDTES samples
mainly γ-phase was formed as shown by Fourier-transform infrared spectroscopy
analysis. Differential scanning calorimetry measurements indicated that the addition
of filler particles reduced the total crystallinity degree of the PVDF. Dielectric
permittivity values as well as dielectric losses decreased for silanized samples due
to reduced tension at the interface between particles and polymer. Strong intermolecular
interaction between the PVDF chains and the APTES-modified particles
led to enhanced breakdown strength of these samples. The highest level of
agglomeration in the DDTES-modified samples induced the deterioration of ferroelectric
properties. The highest voltage output of  15 V and 225 μW of powerwas
obtained for the APTES-modified harvester, evidencing their potential for energy
harvesting applications.
PB  - John Wiley and Sons Inc
T2  - Polymer Composites
T1  - Advantages and limitations of active phase silanization in PVDF composites: Focus on electrical properties and energy harvesting potential
EP  - 4446
IS  - 5
SP  - 4428
VL  - 45
DO  - 10.1002/pc.28071
ER  - 

@article{
author = "Vijatović Petrović, Mirjana and Craciun, Floriana and Cordero, Francesco and MERCADELLI, ELISA and Ilić, Nikola and Despotovic, Zeljko V. and Bobić, Jelena and Džunuzović, Adis and Galassi, Carmen and Stagnaro, Paola and Canu, Giovanna and Buscaglia, Maria Teresa and Brunengo, Elisabetta",
year = "2024",
abstract = "In order to further improve the performance of 0.94[(Bi0.5Na0.5)TiO3]-0.06BaTiO3/
polyvinylidene fluoride (NBT-BT/PVDF) flexible composite films prepared by the
hot-pressing method, the effect of surface modification of the NBT-BT particles on
the structure and properties of the films was investigated. Two coupling agents,
namely, (3-aminopropyl)triethoxysilane (APTES) and dodecyl triethoxysilane
(DDTES) were added to enhance dispersion and interfacial adhesion of the active
phase powder with the polymer matrix. The highest amount of the electroactive
PVDF β-phase was formed in APTES-modified samples while in DDTES samples
mainly γ-phase was formed as shown by Fourier-transform infrared spectroscopy
analysis. Differential scanning calorimetry measurements indicated that the addition
of filler particles reduced the total crystallinity degree of the PVDF. Dielectric
permittivity values as well as dielectric losses decreased for silanized samples due
to reduced tension at the interface between particles and polymer. Strong intermolecular
interaction between the PVDF chains and the APTES-modified particles
led to enhanced breakdown strength of these samples. The highest level of
agglomeration in the DDTES-modified samples induced the deterioration of ferroelectric
properties. The highest voltage output of  15 V and 225 μW of powerwas
obtained for the APTES-modified harvester, evidencing their potential for energy
harvesting applications.",
publisher = "John Wiley and Sons Inc",
journal = "Polymer Composites",
title = "Advantages and limitations of active phase silanization in PVDF composites: Focus on electrical properties and energy harvesting potential",
pages = "4446-4428",
number = "5",
volume = "45",
doi = "10.1002/pc.28071"
}

Vijatović Petrović, M., Craciun, F., Cordero, F., MERCADELLI, E., Ilić, N., Despotovic, Z. V., Bobić, J., Džunuzović, A., Galassi, C., Stagnaro, P., Canu, G., Buscaglia, M. T.,& Brunengo, E.. (2024). Advantages and limitations of active phase silanization in PVDF composites: Focus on electrical properties and energy harvesting potential. in Polymer Composites
John Wiley and Sons Inc., 45(5), 4428-4446.
https://doi.org/10.1002/pc.28071

Vijatović Petrović M, Craciun F, Cordero F, MERCADELLI E, Ilić N, Despotovic ZV, Bobić J, Džunuzović A, Galassi C, Stagnaro P, Canu G, Buscaglia MT, Brunengo E. Advantages and limitations of active phase silanization in PVDF composites: Focus on electrical properties and energy harvesting potential. in Polymer Composites. 2024;45(5):4428-4446.
doi:10.1002/pc.28071 .

Vijatović Petrović, Mirjana, Craciun, Floriana, Cordero, Francesco, MERCADELLI, ELISA, Ilić, Nikola, Despotovic, Zeljko V., Bobić, Jelena, Džunuzović, Adis, Galassi, Carmen, Stagnaro, Paola, Canu, Giovanna, Buscaglia, Maria Teresa, Brunengo, Elisabetta, "Advantages and limitations of active phase silanization in PVDF composites: Focus on electrical properties and energy harvesting potential" in Polymer Composites, 45, no. 5 (2024):4428-4446,
https://doi.org/10.1002/pc.28071 . .

TY  - JOUR
AU  - Bobić, Jelena
AU  - Ilić, Nikola
AU  - Despotovic, Zeljko V.
AU  - Džunuzović, Adis
AU  - Grigalaitis, Robertas
AU  - Stijepovic, Ivan
AU  - Stojanovic, Biljana
AU  - Vijatović Petrović, Mirjana
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2124
AB  - For the last several decades, energy harvesters based on piezoelectricity from mechanical
vibration have emerged as very promising devices that are being explored extensively for their
functionality in energy technologies. In this paper, a series of flexible lead-free BaZr0.2Ti0.8O3
(BZT)/PVDF and lead-based PbZr0.52Ti0.48O3 (PZT)/PVDF piezocomposites with variable filler
content up to 50 vol% were prepared by a hot pressing method. The structure and morphology
of the BZT and PZT powders, as well as the distribution of the piezo-active filler in the obtained
flexible films were characterized by XRD and SEM analysis. In addition, the remnant polarization
(Pr) and leakage current were also investigated to evaluate the breakdown strength in both types of flexible films. The calculations of storage energies and output voltage obtained for the investigated materials revealed an increasing trend with an increasing amount of BZT and PZT active phases.
The maximum storage energy of 0.42 J/cm3 (and energy efficiency of 40.7 %) was obtained for the
PZT–PVDF (40–60) films, while the maximum output voltage of about 10 V (~10 μA) was obtained
for the PZT–PVDF (50–50) flexible film. In addition, a comparison between the properties of the
lead-based and lead-free flexible films, as well as the potential use of these films as energy storage and energy harvesting systems were analyzed.
PB  - MDPI, Basel, Switzerland
T2  - Crystals
T1  - Properties and Potential Application of Lead-Free (BaZr0.2Ti0.8O3) and Lead-Based (PbZr0.52Ti0.48O3) Flexible Thick Films
IS  - 8
SP  - 1178
VL  - 13
DO  - 10.3390/cryst13081178
ER  - 

@article{
author = "Bobić, Jelena and Ilić, Nikola and Despotovic, Zeljko V. and Džunuzović, Adis and Grigalaitis, Robertas and Stijepovic, Ivan and Stojanovic, Biljana and Vijatović Petrović, Mirjana",
year = "2023",
abstract = "For the last several decades, energy harvesters based on piezoelectricity from mechanical
vibration have emerged as very promising devices that are being explored extensively for their
functionality in energy technologies. In this paper, a series of flexible lead-free BaZr0.2Ti0.8O3
(BZT)/PVDF and lead-based PbZr0.52Ti0.48O3 (PZT)/PVDF piezocomposites with variable filler
content up to 50 vol% were prepared by a hot pressing method. The structure and morphology
of the BZT and PZT powders, as well as the distribution of the piezo-active filler in the obtained
flexible films were characterized by XRD and SEM analysis. In addition, the remnant polarization
(Pr) and leakage current were also investigated to evaluate the breakdown strength in both types of flexible films. The calculations of storage energies and output voltage obtained for the investigated materials revealed an increasing trend with an increasing amount of BZT and PZT active phases.
The maximum storage energy of 0.42 J/cm3 (and energy efficiency of 40.7 %) was obtained for the
PZT–PVDF (40–60) films, while the maximum output voltage of about 10 V (~10 μA) was obtained
for the PZT–PVDF (50–50) flexible film. In addition, a comparison between the properties of the
lead-based and lead-free flexible films, as well as the potential use of these films as energy storage and energy harvesting systems were analyzed.",
publisher = "MDPI, Basel, Switzerland",
journal = "Crystals",
title = "Properties and Potential Application of Lead-Free (BaZr0.2Ti0.8O3) and Lead-Based (PbZr0.52Ti0.48O3) Flexible Thick Films",
number = "8",
pages = "1178",
volume = "13",
doi = "10.3390/cryst13081178"
}

Bobić, J., Ilić, N., Despotovic, Z. V., Džunuzović, A., Grigalaitis, R., Stijepovic, I., Stojanovic, B.,& Vijatović Petrović, M.. (2023). Properties and Potential Application of Lead-Free (BaZr0.2Ti0.8O3) and Lead-Based (PbZr0.52Ti0.48O3) Flexible Thick Films. in Crystals
MDPI, Basel, Switzerland., 13(8), 1178.
https://doi.org/10.3390/cryst13081178

Bobić J, Ilić N, Despotovic ZV, Džunuzović A, Grigalaitis R, Stijepovic I, Stojanovic B, Vijatović Petrović M. Properties and Potential Application of Lead-Free (BaZr0.2Ti0.8O3) and Lead-Based (PbZr0.52Ti0.48O3) Flexible Thick Films. in Crystals. 2023;13(8):1178.
doi:10.3390/cryst13081178 .

Bobić, Jelena, Ilić, Nikola, Despotovic, Zeljko V., Džunuzović, Adis, Grigalaitis, Robertas, Stijepovic, Ivan, Stojanovic, Biljana, Vijatović Petrović, Mirjana, "Properties and Potential Application of Lead-Free (BaZr0.2Ti0.8O3) and Lead-Based (PbZr0.52Ti0.48O3) Flexible Thick Films" in Crystals, 13, no. 8 (2023):1178,
https://doi.org/10.3390/cryst13081178 . .