Electrospinning of different polyamidic nanofibers for the modification of CFRP laminates

Laminated CFRPs exhibit excellent mechanical properties, matching or even exceeding those of traditional metallic materials while maintaining a lower density. However, these materials present certain drawbacks that can compromise their reliability during service life, particularly due to delamination and interlaminar damage. In the present work, nanofibrous polymer membranes produced via electrospinning were investigated, with the ultimate goal of being integrated into laminated CFRPs to counteract delamination and enhance fracture toughness. The produced fibrous webs were characterized morphologically via SEM, while their thermal and viscoelastic properties were analyzed using DSC, TGA, and DMA, and their mechanical behaviour through tensile testing. Finally, the integration of these membranes into composites was evaluated through specific fracture mechanics tests to assess improvements in interlaminar performance.