The remarkable growth of high-frequency electronic systems has raised concerns about electromagnetic interference (EMI), emphasizing the need for lightweight and efficient shielding materials. In this study, ternary composites based on polypyrrole (PPy), graphene oxide (GO), and silver nanowires (AgNWs) were synthesized through chemical oxidative polymerization of pyrrole monomer and embedded into polycaprolactone (PCL) matrices to create flexible films. Structural and morphological analyses confirmed the successful incorporation of all components, with scanning electron microscopy showing granular PPy, sheet-like GO, and fibrous AgNWs, while spectroscopic studies indicated strong interfacial interactions without damaging the PPy backbone. Thermomechanical analysis revealed that GO increased stiffness and defined the glass transition, whereas AgNWs improved toughness and energy dissipation; their combined use resulted in balanced properties. EMI shielding effectiveness (SE) was tested ...in the X-band (8–12 GHz). Pure PPy exhibited poor shielding ability, while the addition of GO and AgNWs significantly enhanced performance. The highest EMI SE values were observed in PPy/GO–AgNWs composites, with an average SE of 16.05 dB at 20 wt% of the composite in the PCL matrix, equivalent to about 84.4% attenuation of incident waves. These results demonstrate that the synergistic integration of GO and AgNWs into PPy matrices enables the creation of lightweight, flexible films with advanced EMI shielding properties, showing great potential for next-generation electronic and aerospace applications.
TY - JOUR
AU - Gajić, Brankica
AU - Radoičić, Marija
AU - Yasir, Muhammad
AU - Saeed, Warda
AU - Bolka, Silvester
AU - Nardin, Blaž
AU - Potočnik, Jelena
AU - Bajuk-Bogdanović, Danica V.
AU - Ćirić-Marjanović, Gordana N.
AU - Šaponjić, Zoran
AU - Jovanović, Svetlana
PY - 2025
UR - https://vinar.vin.bg.ac.rs/handle/123456789/15787
AB - The remarkable growth of high-frequency electronic systems has raised concerns about electromagnetic interference (EMI), emphasizing the need for lightweight and efficient shielding materials. In this study, ternary composites based on polypyrrole (PPy), graphene oxide (GO), and silver nanowires (AgNWs) were synthesized through chemical oxidative polymerization of pyrrole monomer and embedded into polycaprolactone (PCL) matrices to create flexible films. Structural and morphological analyses confirmed the successful incorporation of all components, with scanning electron microscopy showing granular PPy, sheet-like GO, and fibrous AgNWs, while spectroscopic studies indicated strong interfacial interactions without damaging the PPy backbone. Thermomechanical analysis revealed that GO increased stiffness and defined the glass transition, whereas AgNWs improved toughness and energy dissipation; their combined use resulted in balanced properties. EMI shielding effectiveness (SE) was tested in the X-band (8–12 GHz). Pure PPy exhibited poor shielding ability, while the addition of GO and AgNWs significantly enhanced performance. The highest EMI SE values were observed in PPy/GO–AgNWs composites, with an average SE of 16.05 dB at 20 wt% of the composite in the PCL matrix, equivalent to about 84.4% attenuation of incident waves. These results demonstrate that the synergistic integration of GO and AgNWs into PPy matrices enables the creation of lightweight, flexible films with advanced EMI shielding properties, showing great potential for next-generation electronic and aerospace applications.
T2 - Molecules
T1 - Synergistic Integration of Polypyrrole, Graphene Oxide, and Silver Nanowires into Flexible Polymeric Films for EMI Shielding Applications
VL - 30
IS - 21
SP - 4221
DO - 10.3390/molecules30214221
ER -
@article{
author = "Gajić, Brankica and Radoičić, Marija and Yasir, Muhammad and Saeed, Warda and Bolka, Silvester and Nardin, Blaž and Potočnik, Jelena and Bajuk-Bogdanović, Danica V. and Ćirić-Marjanović, Gordana N. and Šaponjić, Zoran and Jovanović, Svetlana",
year = "2025",
abstract = "The remarkable growth of high-frequency electronic systems has raised concerns about electromagnetic interference (EMI), emphasizing the need for lightweight and efficient shielding materials. In this study, ternary composites based on polypyrrole (PPy), graphene oxide (GO), and silver nanowires (AgNWs) were synthesized through chemical oxidative polymerization of pyrrole monomer and embedded into polycaprolactone (PCL) matrices to create flexible films. Structural and morphological analyses confirmed the successful incorporation of all components, with scanning electron microscopy showing granular PPy, sheet-like GO, and fibrous AgNWs, while spectroscopic studies indicated strong interfacial interactions without damaging the PPy backbone. Thermomechanical analysis revealed that GO increased stiffness and defined the glass transition, whereas AgNWs improved toughness and energy dissipation; their combined use resulted in balanced properties. EMI shielding effectiveness (SE) was tested in the X-band (8–12 GHz). Pure PPy exhibited poor shielding ability, while the addition of GO and AgNWs significantly enhanced performance. The highest EMI SE values were observed in PPy/GO–AgNWs composites, with an average SE of 16.05 dB at 20 wt% of the composite in the PCL matrix, equivalent to about 84.4% attenuation of incident waves. These results demonstrate that the synergistic integration of GO and AgNWs into PPy matrices enables the creation of lightweight, flexible films with advanced EMI shielding properties, showing great potential for next-generation electronic and aerospace applications.",
journal = "Molecules",
title = "Synergistic Integration of Polypyrrole, Graphene Oxide, and Silver Nanowires into Flexible Polymeric Films for EMI Shielding Applications",
volume = "30",
number = "21",
pages = "4221",
doi = "10.3390/molecules30214221"
}
Gajić, B., Radoičić, M., Yasir, M., Saeed, W., Bolka, S., Nardin, B., Potočnik, J., Bajuk-Bogdanović, D. V., Ćirić-Marjanović, G. N., Šaponjić, Z.,& Jovanović, S.. (2025). Synergistic Integration of Polypyrrole, Graphene Oxide, and Silver Nanowires into Flexible Polymeric Films for EMI Shielding Applications. in Molecules, 30(21), 4221.
https://doi.org/10.3390/molecules30214221
Gajić B, Radoičić M, Yasir M, Saeed W, Bolka S, Nardin B, Potočnik J, Bajuk-Bogdanović DV, Ćirić-Marjanović GN, Šaponjić Z, Jovanović S. Synergistic Integration of Polypyrrole, Graphene Oxide, and Silver Nanowires into Flexible Polymeric Films for EMI Shielding Applications. in Molecules. 2025;30(21):4221.
doi:10.3390/molecules30214221 .
Gajić, Brankica, Radoičić, Marija, Yasir, Muhammad, Saeed, Warda, Bolka, Silvester, Nardin, Blaž, Potočnik, Jelena, Bajuk-Bogdanović, Danica V., Ćirić-Marjanović, Gordana N., Šaponjić, Zoran, Jovanović, Svetlana, "Synergistic Integration of Polypyrrole, Graphene Oxide, and Silver Nanowires into Flexible Polymeric Films for EMI Shielding Applications" in Molecules, 30, no. 21 (2025):4221,
https://doi.org/10.3390/molecules30214221 . .
