742: MXene-Polyurethane Nanocomposites: A Novel Approach for High-Performance Flexible Electronic Materials
Poster session 7 | room 1 - Dr. Marija Pergal
MXene-Polyurethane Nanocomposites: A Novel Approach for High-Performance Flexible Electronic Materials
Dr. Marija Pergal
MXene-Polyurethane Nanocomposites: A Novel Approach for High-Performance Flexible Electronic Materials
Ivan Pešić1*, Marko Spasenović1, Jean-Olivier Durand2, Dana Vasiljević-Radović1, Sanja Ostojić3, Miloš Petrović4, Vesna Radojević4, Marija Pergal1*
1Center for Microelectronic Technologies, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia. (Corresponding authors: marija.pergal@ihtm.bg.ac.rs; ipesic@nanosys.ihtm..bg.ac.rs)
2Institut Charles Gerhardt Montpellier (ICGM), University. Montpellier, CNRS, ENSCM; Montpellier, France
3Institute of General and Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia
4Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
Performance of flexible electronic devices based on MXene-polymer composites can be significantly enhanced by optimizing polymer composition and the design of MXenes and polymers. This study focuses on the development and characterization of novel polyurethane (PU) nanocomposites reinforced with 1 wt.% of functionalized MXene. A series of nanocomposites with varying soft segment content (30–60 wt.%) was synthesized via in situ polymerization. XPS analysis confirmed the presence of MXene within the nanocomposite structure. Comprehensive characterization of the nanocomposites demonstrated significant improvements in structural, mechanical, surface, and thermal properties with the addition of MXene. FTIR analysis revealed that MXene incorporation enhanced microphase separation (17–50%) and strengthened hydrogen bonding (HB) interactions (HB index: 38–66%). Tensile testing of PU nanocomposites demonstrated a substantial enhancement in Young’s modulus (8–84 MPa) and tensile strength (2–11 MPa) as compared to pure PU. Surface characterization indicated a decrease in roughness (11–87 nm), while thermal analyses revealed an increase in the glass transition temperature from 48 to 62 °C and the degradation temperature from 278 to 297 °C as compared to pure PU. Among the studied materials, the PU nanocomposite with 50 wt.% soft segment content exhibited the most favorable characteristics for flexible electronic applications, including superior mechanical properties, enhanced thermal stability, and minimal surface roughness. These findings demonstrate that functionalized MXene can be effectively utilized to tailor the functional properties of PU nanocomposites, paving the way for advanced materials suitable for applications, such as EMI shielding coatings and strain sensors.
Keywords: polyurethanes, MXenes, 2D materials, polymer nanocomposites, nanotechnology, characterization
Acknowledgments
This research was supported by the Science Fund of the Republic of Serbia, #4950, Polymer/graphene heterostructures for physiological sensors – Polygraph and by the Ministry of Science, Technological Development, and Innovation of Republic of Serbia (Contract No: 451-03-66/2025-03/200026).
References:
1. Pergal, M. V., Brkljačić, J., Tovilović-Kovačević, G., Špírková, M., Kodranov, I. D., Manojlović, D. D., Knežević, N. Ž. (2021). Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites. Progress in Organic Coatings, 151, 106049, https://doi.org/10.1016/j.porgcoat.2020.106049
2. I. Pešić et al, Science of Sintering, 2024, Pešić, I., Pergal, M. V., Vasiljević-Radović, D., Popović, M., Uskoković, P., Petrović, M., & Radojević, V. (2024). Capacitance breakthroughs in free-standing electrodes through MXene functionalization. Science of Sintering. https://doi.org/10.2298/SOS240100028P28.
3. Shahzad, F., Alhabeb, M., Hatter, C. B., Anasori, B., Man Hong, S., Koo, C. M., & Gogotsi, Y. (2016). Electromagnetic interference shielding with 2D transition metal carbides (MXenes). Science, 353(6304), 1137-1140, https://doi.org/10.1126/science.aag2421
4. Jia, Z., Li, Z., Ma, S., Zhang, W., Chen, Y., Luo, Y., & Kong, L. (2021). Constructing conductive titanium carbide nanosheet (MXene) network on polyurethane/polyacrylonitrile fiber framework for flexible strain sensor. Journal of Colloid and Interface Science, 584, 1-10. https://doi.org/10.1016/j.jcis.2020.09.091