2026-04-19T18:44:24Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/95232024-09-04T00:05:21Zcom_10259_4313com_10259_5086com_10259_2604col_10259_4314

00925njm 22002777a 4500 dc Miguel Ortega, Alvaro author Vallejos Calzada, Saúl author García Pérez, José Miguel author Trigo López, Miriam author 2024-10 This study aimed to enhance the mechanical properties of m-aramids by incorporating varying percentages of p-aramid side chains through copolymerization while ensuring solubility for practical applications. The mechanical performance of the resulting copolymers was compared with the commercial m-aramid, MPIA (poly(m-phenylene terephthalamide)). Notably, even with a 20% incorporation of p-aramid side chains, there was a substantial increase of 48% in Young’s modulus and 7% in tensile strength compared to MPIA. Additionally, the nitro group capping the p-aramid side chains demonstrated significant efficacy in enhancing the mechanical performance of the materials upon exposure to hydrogen. Specifically, there was an increase of more than 11% in Young’s modulus upon initial contact with hydrogen. This finding suggests potential applications in protective coatings for stainless steel used in high-pressure hydrogen storage environments. In such applications, exposure to hydrogen can accelerate embrittlement and limit operational lifespan, and coating with these materials can mitigate embrittlement and improve operational lifespan. 0014-3057 http://hdl.handle.net/10259/9523 10.1016/j.eurpolymj.2024.113397 Mechanical performance Thermal properties Hydrogen bonding High performance Side chain Application in hydrogen environments Boosting m-aramids performance with p-oriented aromatic amide side chains