TY  - JOUR
AU  - Petronijević, Ivan
AU  - Dudić, Duško
AU  - Cerović, Dragana
AU  - Maletić, Slavica
AU  - Marinković, Filip
AU  - Pergal, Marija
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6198
AB  - The dielectric properties of nanocomposites based on isotactic polypropylene (iPP) and atactic polystyrene (aPS) obtained by novel, simple, and environmentally friendly treatment technique have been analyzed in this study. The best treatment conditions to obtain nanocomposites with embedded core-shell particles with enhanced dielectric properties were considered. Treatment of polymer matrices in water solution iron(II)-chloride had the most pronounced precipitation effect, that was directly related to the appearance of higher transition metal concentrations in the iPP and aPS matrices, in comparison to treatments in the other two transition metal salts, MnCl2 and NiCl2. Relative dielectric constant and loss tangent have been studied in the frequency range from 20 Hz to 9 MHz. Embedded core-shell nanoparticles (from 15 to 150 nm in diameter) in a very small amount (1.72E-8 mol/cm3 to 1.17E-5 mol/cm3) resulted in significant improvement (2.5% up to 9.1%) and stabilization of relative dielectric constant value toward higher frequencies and also lowering loss tangent in compare to starting polymer matrices. These properties indicate that materials obtained with the presented treatment technique can be applied as microelectronic packing and with further development of the method in order to obtain a higher concentration of metal ions as energy storage devices.
PB  - Wiley
T2  - Polymers for Advanced Technologies
T1  - Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions
SP  - 1
EP  - 10
DO  - 10.1002/pat.6110
ER  - 

@article{
author = "Petronijević, Ivan and Dudić, Duško and Cerović, Dragana and Maletić, Slavica and Marinković, Filip and Pergal, Marija and Anđelković, Ljubica",
year = "2023",
abstract = "The dielectric properties of nanocomposites based on isotactic polypropylene (iPP) and atactic polystyrene (aPS) obtained by novel, simple, and environmentally friendly treatment technique have been analyzed in this study. The best treatment conditions to obtain nanocomposites with embedded core-shell particles with enhanced dielectric properties were considered. Treatment of polymer matrices in water solution iron(II)-chloride had the most pronounced precipitation effect, that was directly related to the appearance of higher transition metal concentrations in the iPP and aPS matrices, in comparison to treatments in the other two transition metal salts, MnCl2 and NiCl2. Relative dielectric constant and loss tangent have been studied in the frequency range from 20 Hz to 9 MHz. Embedded core-shell nanoparticles (from 15 to 150 nm in diameter) in a very small amount (1.72E-8 mol/cm3 to 1.17E-5 mol/cm3) resulted in significant improvement (2.5% up to 9.1%) and stabilization of relative dielectric constant value toward higher frequencies and also lowering loss tangent in compare to starting polymer matrices. These properties indicate that materials obtained with the presented treatment technique can be applied as microelectronic packing and with further development of the method in order to obtain a higher concentration of metal ions as energy storage devices.",
publisher = "Wiley",
journal = "Polymers for Advanced Technologies",
title = "Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions",
pages = "1-10",
doi = "10.1002/pat.6110"
}

Petronijević, I., Dudić, D., Cerović, D., Maletić, S., Marinković, F., Pergal, M.,& Anđelković, L.. (2023). Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions. in Polymers for Advanced Technologies
Wiley., 1-10.
https://doi.org/10.1002/pat.6110

Petronijević I, Dudić D, Cerović D, Maletić S, Marinković F, Pergal M, Anđelković L. Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions. in Polymers for Advanced Technologies. 2023;:1-10.
doi:10.1002/pat.6110 .

Petronijević, Ivan, Dudić, Duško, Cerović, Dragana, Maletić, Slavica, Marinković, Filip, Pergal, Marija, Anđelković, Ljubica, "Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions" in Polymers for Advanced Technologies (2023):1-10,
https://doi.org/10.1002/pat.6110 . .

TY  - CONF
AU  - Petronijević, Ivan
AU  - Dudić, Duško
AU  - Cerović, Dragana
AU  - Maletić, Slavica
AU  - Marinković, Filip
AU  - Pergal, Marija
AU  - Anđelković, Ljubica
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6023
AB  - Polymer nanocomposites are prepared by a simple and environmentally friendly technique. First, sheets of isotactic polypropylene (iPP) and atactic polystyrene (aPS) were prepared by compression molding with Servitec Polystat Press 200 T at 473.15 K and 3.0 MPa pressure followed by quenching in water at room temperature. The polymer sheets thus prepared were then immersed separately in three saturated salt water solutions (MnCl2, FeCl2, and NiCl2), at two temperatures (23ºC and 90ºC), and under influence of two DC electrical potentials (+4 kV, and ground potential). Count profiles and generated images of TOF – SIMS records have shown that higher temperature treatment (90ºC) and positive potential (+4kV) have given the highest count of iron ions and better distribution and dispersion of nanoparticles in polymer matrices. Also, the measured concentration of transition metals by ICP-OES confirmed higher concentrations of metals in nanocomposites obtained by these treatment conditions. It was stated that iron(II)-chloride had the highest concentration in iPP and aPS matrices in comparison to the other two transition salts. TEM micrographs showed spherically-shaped cores in the core-shell system and agglomerated particles of irregular shape. Encapsulation of iron cores prevented nanoparticles
from agglomeration. The cores of the investigated particles were probably iron oxides and/or hydroxides that occurred during the hydrolysis of iron salts in deionized water solution. Dielectric properties of obtained nanodielectrics were investigated. Relative dielectric constant and loss tangent has been studied in the frequency range from 20 Hz to 9 MHz. It was shown that adding the small amount of core-shell nanoparticles (from 15 nm to 150 nm in diameter) in a very small amount (1.72E-8 mol/cm3 to 1.17E-5 mol/cm3) are resulted in significant improvement and stabilization of relative dielectric constant value and also lowering loss tangent in compare to starting polymer matrices.These dielectric properties were marked as suitable for nanodielectric application for high speed and high dencity microelectronic packaging.
PB  - Belgrade : SANU
C3  - The Book of Abstracts, The 11th International Conference of the Balkan Physical Union, 28 August - 1 September, 2022, Belgrade, Serbia
T1  - Polymer nanocomposites filled with core-shell nanoparticles for nanodielectric application
SP  - 130
EP  - 130
UR  - https://hdl.handle.net/21.15107/rcub_cer_6023
ER  - 

@conference{
author = "Petronijević, Ivan and Dudić, Duško and Cerović, Dragana and Maletić, Slavica and Marinković, Filip and Pergal, Marija and Anđelković, Ljubica",
year = "2022",
abstract = "Polymer nanocomposites are prepared by a simple and environmentally friendly technique. First, sheets of isotactic polypropylene (iPP) and atactic polystyrene (aPS) were prepared by compression molding with Servitec Polystat Press 200 T at 473.15 K and 3.0 MPa pressure followed by quenching in water at room temperature. The polymer sheets thus prepared were then immersed separately in three saturated salt water solutions (MnCl2, FeCl2, and NiCl2), at two temperatures (23ºC and 90ºC), and under influence of two DC electrical potentials (+4 kV, and ground potential). Count profiles and generated images of TOF – SIMS records have shown that higher temperature treatment (90ºC) and positive potential (+4kV) have given the highest count of iron ions and better distribution and dispersion of nanoparticles in polymer matrices. Also, the measured concentration of transition metals by ICP-OES confirmed higher concentrations of metals in nanocomposites obtained by these treatment conditions. It was stated that iron(II)-chloride had the highest concentration in iPP and aPS matrices in comparison to the other two transition salts. TEM micrographs showed spherically-shaped cores in the core-shell system and agglomerated particles of irregular shape. Encapsulation of iron cores prevented nanoparticles
from agglomeration. The cores of the investigated particles were probably iron oxides and/or hydroxides that occurred during the hydrolysis of iron salts in deionized water solution. Dielectric properties of obtained nanodielectrics were investigated. Relative dielectric constant and loss tangent has been studied in the frequency range from 20 Hz to 9 MHz. It was shown that adding the small amount of core-shell nanoparticles (from 15 nm to 150 nm in diameter) in a very small amount (1.72E-8 mol/cm3 to 1.17E-5 mol/cm3) are resulted in significant improvement and stabilization of relative dielectric constant value and also lowering loss tangent in compare to starting polymer matrices.These dielectric properties were marked as suitable for nanodielectric application for high speed and high dencity microelectronic packaging.",
publisher = "Belgrade : SANU",
journal = "The Book of Abstracts, The 11th International Conference of the Balkan Physical Union, 28 August - 1 September, 2022, Belgrade, Serbia",
title = "Polymer nanocomposites filled with core-shell nanoparticles for nanodielectric application",
pages = "130-130",
url = "https://hdl.handle.net/21.15107/rcub_cer_6023"
}

Petronijević, I., Dudić, D., Cerović, D., Maletić, S., Marinković, F., Pergal, M.,& Anđelković, L.. (2022). Polymer nanocomposites filled with core-shell nanoparticles for nanodielectric application. in The Book of Abstracts, The 11th International Conference of the Balkan Physical Union, 28 August - 1 September, 2022, Belgrade, Serbia
Belgrade : SANU., 130-130.
https://hdl.handle.net/21.15107/rcub_cer_6023

Petronijević I, Dudić D, Cerović D, Maletić S, Marinković F, Pergal M, Anđelković L. Polymer nanocomposites filled with core-shell nanoparticles for nanodielectric application. in The Book of Abstracts, The 11th International Conference of the Balkan Physical Union, 28 August - 1 September, 2022, Belgrade, Serbia. 2022;:130-130.
https://hdl.handle.net/21.15107/rcub_cer_6023 .

Petronijević, Ivan, Dudić, Duško, Cerović, Dragana, Maletić, Slavica, Marinković, Filip, Pergal, Marija, Anđelković, Ljubica, "Polymer nanocomposites filled with core-shell nanoparticles for nanodielectric application" in The Book of Abstracts, The 11th International Conference of the Balkan Physical Union, 28 August - 1 September, 2022, Belgrade, Serbia (2022):130-130,
https://hdl.handle.net/21.15107/rcub_cer_6023 .

TY  - CONF
AU  - Ivanovska, Aleksandra
AU  - Asanović, Koviljka
AU  - Cerović, Dragana
AU  - Pavun, Leposava
AU  - Dojčinović, Biljana
AU  - Mihajlovski, Katarina
AU  - Kostić, Mirjana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7546
AB  - This study aims to obtain multifunctional jute fabrics by using simple alkaliand oxidative protocols. Performed chemical treatments contributed to obtaining jute fabricswith enhanced electro-physical and sorption properties. Moreover, the jute fabrics werefunctionalized by incorporation of Ag+ (resulted in decreased volume electrical resistivityand excellent antibacterial activity) and in-situ synthesis of Cu-based nanoparticles (resultedin 38-88 times higher energy storage from an external electric field). Following the increasedfocus on the concept of circular economy, the possibility of jute fabric waste revalorizationfor wastewater purification (from Cu2+, Zn2+, Ni2+) was examined.
AB  - Cilj ovog istraživanja je dobijanje multifunkcionalnih tkanina od juteupotrebom jednostavnih alkalnih i oksidativnih postupaka. Ovi hemijski tretmani omogućilisu dobijanje tkanina od jute sa poboljšanim elektro-fizičkim i sorpcionim svojstvima.Tkanine od jute su, takođe, bile funkcionalizovane jonima srebra (što je rezultovalosmanjenom specifičnom zapreminskom električnom otpornošću i odličnom antibakterijskomaktivnošću) i in-situ sintezom nanočestica na bazi bakra (što je rezultovalo 38-88 puta većimskladištenjem energije iz spoljašnjeg električnog polja). U skladu sa načelima cirkularneekonomije, ispitana je mogućnost revalorizacije otpada tkanina od jute za prečišćavanjeotpadnih voda (od Cu2+, Zn2+, Ni2+- jona).
PB  - Belgrade : Union of Engineers and Textile Technicians of Serbia
C3  - Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021
T1  - Simple protocols for obtaining multifunctional jute fabrics
T1  - Jednostavni postupci za dobijanje multifunkcionalnih tkanina od jute
SP  - 3
EP  - 12
UR  - https://hdl.handle.net/21.15107/rcub_cer_7546
ER  - 

@conference{
author = "Ivanovska, Aleksandra and Asanović, Koviljka and Cerović, Dragana and Pavun, Leposava and Dojčinović, Biljana and Mihajlovski, Katarina and Kostić, Mirjana",
year = "2021",
abstract = "This study aims to obtain multifunctional jute fabrics by using simple alkaliand oxidative protocols. Performed chemical treatments contributed to obtaining jute fabricswith enhanced electro-physical and sorption properties. Moreover, the jute fabrics werefunctionalized by incorporation of Ag+ (resulted in decreased volume electrical resistivityand excellent antibacterial activity) and in-situ synthesis of Cu-based nanoparticles (resultedin 38-88 times higher energy storage from an external electric field). Following the increasedfocus on the concept of circular economy, the possibility of jute fabric waste revalorizationfor wastewater purification (from Cu2+, Zn2+, Ni2+) was examined., Cilj ovog istraživanja je dobijanje multifunkcionalnih tkanina od juteupotrebom jednostavnih alkalnih i oksidativnih postupaka. Ovi hemijski tretmani omogućilisu dobijanje tkanina od jute sa poboljšanim elektro-fizičkim i sorpcionim svojstvima.Tkanine od jute su, takođe, bile funkcionalizovane jonima srebra (što je rezultovalosmanjenom specifičnom zapreminskom električnom otpornošću i odličnom antibakterijskomaktivnošću) i in-situ sintezom nanočestica na bazi bakra (što je rezultovalo 38-88 puta većimskladištenjem energije iz spoljašnjeg električnog polja). U skladu sa načelima cirkularneekonomije, ispitana je mogućnost revalorizacije otpada tkanina od jute za prečišćavanjeotpadnih voda (od Cu2+, Zn2+, Ni2+- jona).",
publisher = "Belgrade : Union of Engineers and Textile Technicians of Serbia",
journal = "Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021",
title = "Simple protocols for obtaining multifunctional jute fabrics, Jednostavni postupci za dobijanje multifunkcionalnih tkanina od jute",
pages = "3-12",
url = "https://hdl.handle.net/21.15107/rcub_cer_7546"
}

Ivanovska, A., Asanović, K., Cerović, D., Pavun, L., Dojčinović, B., Mihajlovski, K.,& Kostić, M.. (2021). Simple protocols for obtaining multifunctional jute fabrics. in Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021
Belgrade : Union of Engineers and Textile Technicians of Serbia., 3-12.
https://hdl.handle.net/21.15107/rcub_cer_7546

Ivanovska A, Asanović K, Cerović D, Pavun L, Dojčinović B, Mihajlovski K, Kostić M. Simple protocols for obtaining multifunctional jute fabrics. in Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021. 2021;:3-12.
https://hdl.handle.net/21.15107/rcub_cer_7546 .

Ivanovska, Aleksandra, Asanović, Koviljka, Cerović, Dragana, Pavun, Leposava, Dojčinović, Biljana, Mihajlovski, Katarina, Kostić, Mirjana, "Simple protocols for obtaining multifunctional jute fabrics" in Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021 (2021):3-12,
https://hdl.handle.net/21.15107/rcub_cer_7546 .