Facile synthesis of high-performance and self-healing polyurethane-urea nanocomposites reinforced with graphene
Meng Q. Xu Z. Yu Y. Li Y. Diaby A.L. Araby S.
February 2026KeAi Communications Co.
Nano Materials Science
2026#8Issue 193 - 106 pp.
In this study, a facile method was employed to synthesize strong, yet highly elastic polyurethane-urea (PUU) with typical characteristics and 94 % optical transmittance. Graphene platelets (GNPs) were prepared and modified via a scalable and eco-friendly mechanochemical approach. The produced GNPs is at 1.6-nm thickness with high electrical conductivity of ∼950 S/m. The structure-property relations of PUU/GNP nanocomposites were comprehensively investigated through morphology and mechanical properties measurements. The strong interface and high-density hydrogen bonds between modified GNPs (M-GNPs) and PUU significantly enhanced the mechanical properties of the PUU nanocomposite. The PUU composite showed 66.7 % and 36.2 % increments in tensile and impact strengths, respectively, at 0.2 wt% M-GNPs. The reversible hydrogen bond between M-GNPs and PUU endowed the nanocomposite with self-healing properties achieving 97.8 % healing efficiency of the strength after 5 h at 120 °C. This study demonstrates the importance of surface modification and provides a simple yet robust approach for preparing high-performance and functional PUU/graphene composites.
Graphene , Impact strength , Nanocomposite , Polyurethane , Self-healing
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College of Aerospace Engineering, Shenyang Aerospace University, Shenyang, 110136, China
Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan
College of Medicine and Bioinformatics Engineering, Northeastern University, Shenyang, 110819, China
Shenyang Aircraft Design Institute, Shenyang, 110035, China
UniSA Online STEM, University of South Australia, Adelaide, 5000, SA, Australia
College of Aerospace Engineering
Department of Mechanical and Aerospace Engineering
College of Medicine and Bioinformatics Engineering
Shenyang Aircraft Design Institute
UniSA Online STEM
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Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026