19 documents found, page 1 of 2
Thermochromic poly(L-lactic acid) based materials and their printability on dif...
Cruz, B. D. D.; Silva, I. R.; Pereira, N.; Fernandes, L. C.; Tubio, C. R.; Tariq, M.; Esperança, J. M. S. S.; Botelho, Gabriela; Lanceros-Méndez, S.Ionic liquids (ILs) have been combined with different polymer matrixes to develop smart and functional mate rials. Due to their versatility, hybrid materials with specific tailor made properties can be obtained, including printable thermochromic materials, with a strong potential for sensing applications. In this context, the thermochromic IL bis(1-butyl-3-methylimidazolium) tetrachloronickelate ([Bmim]2[ NiCl4...
Ternary composites of poly(vinylidene fluoride-co-hexafluoropropylene) with sil...
Sengupta, S.; Tubio, C. R.; Pinto, R. S.; Barbosa, J.; Silva, M. M.; Gonçalves, R.; Kundu, M.; Lanceros-Mendez, S.; Costa, C. M.In the realm of polymer composites, there is growing interest in the use of more than one filler for achieving multifunctional properties. In this work, a composite separator membrane has been developed for lithium-ion battery application, by incorporating conductive silver nanowires (AgNWs) and titanium dioxide (TiO2) nanoparticles into a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) polymer matr...
Flexible thermoelectric energy harvesting system based on polymer composites
Rodrigues-Marinho, T.; Correia, V.; Tubio, C. R.; Ares-Pernas, A.; Abad, M. J.; Lanceros-Mendez, S.; Costa, Pedro Filipe RibeiroFlexible and easy processing lightweight thermoelectric materials for energy harvesting applications have shown an increasing interest. Thermoplastic polyvinylidene fluoride (PVDF) and elastomer styrene-ethylene/butylene-styrene (SEBS) polymers reinforced with thermoelectric ceramics, including bismuth sulfide (Bi2S3), bismuth telluride (Bi2Te3) and antimony telluride (Sb2Te3), and electrically conductive carbo...
Photoluminescent alginate-based composite inks for anti-counterfeiting security...
Cruz, B. D. D.; Correia, Daniela M.; Polícia, R.; Pereira, N.; Nunes, P.; Fernandes, M.; Tubio, C. R.; Botelho, G.; Lanceros-Méndez, S.Natural polymers have been increasingly explored for a wide range of applications as smart materials due to their unique properties, abundance, and sustainability attributes. In the present work, novel luminescent composite films based on sodium alginate (SA) and different amounts of the compounds sodium tetra(2- thenoyltrifluoroacetonate)europate (III) (Na[Eu(tta)4]) (5, 10 and 20% wt.) and 1-butyl-3-methylimi...
Influence of polymer matrix on the luminescence of phosphor based printable ele...
Polícia, Rita Magalhães; Correia, Daniela M.; Perinka, N.; Tubio, C. R.; Lanceros-Mendez, S.This work reports on the development of printable electroluminescent materials and devices based on different polymer matrixes. For this purpose, different contents of zinc sulfide co-doped with copper (ZnS:Cu) particles (20, 40 and 60% wt.) were incorporated into styrene-ethylene-butylene-styrene (SEBS) (UV resistance and stretchable), poly(vinylidene fluoride (PVDF) (thermal, chemical and UV stability and hig...
Printable piezoresistive polymer composites for self-sensing medical catheter d...
Pimentel, E.; Costa, Pedro Filipe Ribeiro; Tubio, C. R.; Vilaça, J. L.; Costa, Carlos Miguel Silva; Lanceros-Mendez, S.; Miranda, D.There is a constant demand for new and/or improved health treatments that require flexible sensor devices. This is particularly relevant in relation to neurogenic bladder dysfunction. In this context, polymer composites have been developed based on three different matrices, carboxymethyl cellulose (CMC), styrene-ethylene/butylene-styrene (SEBS) and polyvinyl alcohol (PVA), with different concentrations of multi...
Carrageenan based printable magnetic nanocomposites for actuator applications
Macedo, V. M.; Pereira, N.; Tubio, C. R.; Martins, P.; Costa, C. M.; Lanceros-Méndez, S.The digitalization of the society in the context of the Internet of Things (IoT) demands a new generation of sustainable materials and processes to reduce the environmental impact of technological advances. This work reports on sustainable multifunctional nanocomposites based on carrageenan and magnetic cobalt ferrite (CoFe2O4-CFO) nanoparticles, processed by direct-ink-writing and on their applicability as mag...
High-dielectric mouldable and printable wax reinforced with ceramic nanofillers...
Brito-Pereira, R.; Rodrigues-Marinho, T.; Tubio, C. R.; Costa, P.; Lanceros-Méndez, S.Functional polymer composites are being increasingly developed to improve performance and integration into devices. Paraffin wax, as a material suitable for paper-based microfluidics, can be combined with ceramic materials to adapt its dielectric constant, an essential property for many applications, such as printed electronics. Paraffin wax reinforced with high-dielectric ceramic nanofillers such as barium tit...
High dielectric constant poly(vinylidene fluoride-trifluoroethylene-chlorofluor...
Pereira, N.; Gonçalves, S.; Barbosa, J. C.; Gonçalves, Renato Ferreira; Tubio, C. R.; Vilas-Vilela, J. L.; Costa, Carlos Miguel SilvaPoly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene), P(VDF-TrFE-CFE), samples were prepared by solvent casting by varying polymer concentration and solvent evaporation temperature. Different sample morphologies were obtained depending on the processing conditions, as well as different physical-chemical properties such as degree of crystallinity, mechanical and dielectric properties. On the other ha...
Highly sensitive transparent piezoionic materials and their applicability as pr...
Fernandes, Liliana C.; Correia, Daniela M.; Pereira, N.; Tubio, C. R.; Lanceros-Méndez, S.Hybrid materials based on ionic liquids (ILs) and polymers represent an emerging an interesting approach for an increasing number of applications, including sensors and actuators. This work reports on the development of transparent piezoionic materials based on a thermoplastic elastomer styrene-ethylene-butylene-styrene (SEBS) containing 20 wt% of the IL 1-butyl-3-methylimidazolium dicyanamide ([Bmim][N(CN)2]),...