4 documents found, page 1 of 1
Printable ionic liquid modified cellulose acetate for sustainable chromic and r...
Cruz, B. D. D.; Castro, A. S.; Fernandes, L. C.; Pereira, N.; Mendes-Felipe, C.; Tariq, M.; Esperança, J. M. S. S.; Martins, P. M.; Lanceros-Méndez, S.Sustainable technologies and the circular economy paradigms require a reduction of waste, and therefore, research is focusing on the development of sustainable materials and devices capable of being reused, refurbished or recycled. In the present work, printable ionic liquid (IL)-based polymer composites with thermochromic properties have been developed through a more sustainable approach to mitigate the negati...
Photocurable temperature activated humidity hybrid sensing materials for multif...
Mendes-Felipe, C.; Salado, M.; Fernandes, L. C.; Correia, Daniela Maria Silva; Ruiz-Rubio, L.; Tariq, M.; Esperança, J. M. S. S.; Vilas-Vilela, J. L.Photocurable thermochromic and humidity responsive materials based on polyurethane acrylated (PUA) and bis(1-butyl-3-methylimidazolium) tetrachloronickelate ([Bmim]2[NiCl4]) ionic liquid (IL) have been prepared with varying IL content up to 40 wt% within the polymer matrix. The influence of IL content on the photopolymerization process, morphology, Young modulus and electrical conductivity of the materials was ...
UV curable nanocomposites with tailored dielectric response
Mendes-Felipe, C.; Rodrigues-Marinho, T.; Vilas, José L.; Lanceros-Méndez, S.Photopolymerization or UV curing represents a fast and solvent-free technique to obtain polymer-based composites, being one of the main methods used in lithographic processes, surface coatings and the manufacture of integrated circuits. This work reports on the development of UV curable barium titanate/ polyurethane acrylate (BaTiO3/PUA) composites with varying ceramic contents in order to tailor the dielectric...
High dielectric constant UV curable polyurethane acrylate/indium tin oxide comp...
Mendes-Felipe, C.; Barbosa, J. C.; Gonçalves, Sérgio; Rodrigues, Nelson Ricardo Pereira; Costa, Carlos Miguel Silva; Vilas-Vilela, J. L.Taking into consideration environmental issues and additive manufacturing technologies, the development of advanced UV curable polymers and polymer composites is an area of increasing interest. In this scope, polyurethane acrylate (PUA) composites with Indium Tin Oxide (ITO) were produced in order to tune morphology, optical, thermal, mechanical and dielectric properties. It is shown that ITO particles are well...