Publications by authors named "S Flor"
In recent advancements within sensing technology, driven by the Internet of Things (IoT), significant impacts are observed on health sector applications, notably through wearable electronics like electronic tattoos (e-tattoos). These e-tattoos, designed for direct contact with the skin, facilitate precise monitoring of vital physiological parameters, including body heat, a critical indicator for conditions such as inflammation and infection. Monitoring these indicators can be crucial for early detection of chronic conditions, steering toward proactive healthcare management.
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- This study focuses on a new diglycidyl monomer with two imine groups, which can form dynamic and reversible bonds during curing with amine hardeners.
- The curing process leads to the formation of new imine groups through transamination, resulting in observable changes in stress relaxation behavior and the identification of distinct relaxation times using a double-element Maxwell model.
- The research demonstrates that the developed epoxy-amine system is ideal for creating carbon-fiber-reinforced composites, offering benefits like easy fiber impregnation, rapid reshaping, and complete degradation of the polymer matrix for fiber recovery.
Poly(thiourethane)-based covalent adaptable networks are synthesized by reacting a trimer of hexamethylene diisocyanate (Desmodur N3300) containing isocyanurate groups in its structure with 1,6-hexanedithiol. The catalysts evaluated for this process include dibutyltin dilaurate (DBTDL), lanthanum triflate (La(OTf)), and a thermal precursor of 1,8-diazabicyclo[5.4.
View Article and Find Full Text PDFThe Diels-Alder equilibrium is a widely known process in chemistry that can be used to provide a thermoset structure with recyclability and reprocessability mechanisms. In this study, a commercial epoxy resin is modified through the integration of functional groups into the network structure to provide superior performance. The present study has demonstrated that it is possible to adapt the curing process to efficiently incorporate these moieties in the final structure of commercial epoxy-based resins.
View Article and Find Full Text PDFThis study presents the synthesis of a novel biobased epoxy monomer derived from vanillin and cystamine, incorporating imine and disulfide exchangeable groups within its structure. A series of epoxy-based vitrimers with two simultaneous exchange relaxation processes have been produced using this monomer. These exchange mechanisms operate without the need for any catalyst.
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