Mechanical performance and fracture surface analysis of fatty acid-coated iron oxide-reinforced nitrile butadiene composites

• Main Authors: Tiar, Ong Hun, Muhd Julkapli, Nurhidayatullaili
• Format: Article
• Published: Springer Verlag (Germany) 2024
• Subjects: Q Science (General)
• Online Access: http://eprints.um.edu.my/45022/

The addition of iron oxide nanoparticles (IONP) tends to agglomerate easily, and thus it is hard to obtain a uniform and well-dispersed particle nitrile rubber matrix (NBR). IONP was synthesized via the precipitation method, coated with fatty acid to produce coated IONP (C-IONP) before being compounded with NBR latex at 0 to 20 phr loading. The good interaction of C-IONP and NBR matrix was established by the formation of significant FTIR peaks at 1710 and 565 cm−1 presented as C=O and Fe–O bands, respectively. Mechanical performance analysis by universal testing machine demonstrated that the tensile stress of NBR 15 and 20 increased dramatically as compared to neat NBR attributed to filler–filler interaction in C-IONP. Meanwhile, the lower tensile strength increment rate of NBR 5 and 10 than neat NBR was due to the presence of C-IONP which increased the strain by more than 700, with well particle distribution. Graphical abstract: Figure not available: see fulltext. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.