Advanced Properties and Multifunctionality in Dual-Cured Nanocomposites: An Experimental and Modeling Approach

Abstract

The thesis is structured into three thematic blocks that address the progressive development of multifunctional epoxy nanocomposites. The first block focuses on the influence of nanofillers, especially graphene nanoplatelets, and demonstrates that morphology, surface area, and dispersion time critically affect electrical and thermal properties. Self-stratification during molding induces anisotropy, making control of gelation time essential. Applications such as thermoelectric heating and EMI shielding are related to adjustable percolation thresholds. The second block focuses on advanced sequential dual-curing systems, starting with nucleophilic thiol-epoxy networks. The incorporation of carbon nanotubes enables electroactive shape memory and in situ curing, improving efficiency and enabling smart functionalities such as self-heating, de-icing, and magnetic field activation. Analytical models relate the nanoscale structure to performance. The third block explores bio-based epoxy systems and high-temperature dual-curing systems derived from resveratrol. The effect of different amine hardeners is evaluated, highlighting the potential of these systems as high-Tg dual-curing matrices.