Adhesion and Stiffness Matching in Epoxy-Vitrimers/Strain Sensor Fiber Laminates

Hybrid networks, including physical and chemical cross-links, were synthesized from biosourced fatty acid fragments, linked to each other by a controlled number of nonexchangeable ether bonds, exchangeable ester noncovalent hydrogen bonds. The mechanical properties these networks are tuned the ratio di- versus tetraepoxide stoichiometry acid/epoxy. Creep tests insolubility demonstrated vitrimer or vitrimer-like nature resulting materials. thermostimulated welding ability materials was exploited incorporate strain sensors embedding electrically conductive fibers into rubbery matrix. Both efficiency procedure at moderate temperatures (80 °C) tunability attractive assets for effective incorporation thermodegradable while preserving their electrical integrity. behaviors sensor composites simultaneously tested, either in quasi-static cyclic tensile experiments, room temperature larger distance Tg matrices. study emphasizes importance matching Young’s moduli components composite samples, which is strongly temperature-dependent.