25 documents found, page 1 of 3
Tailoring the electrical response of polyvinylidene fluoride nanocomposites wit...
Marinho, Tiago André Rodrigues; Tubio, Carmen Rial; Lanceros-Mendez, S.; Costa, Pedro Filipe RibeiroPolymer-based composites combining the flexibility, low density, and processability of the matrix with the tailored functional performance provided by the fillers are also particularly suitable for large area, flexible, and printable applications. Herein, polyvinylidene fluoride (PVDF) composites with conductive graphene nanoplatelets (G-NPL) and high-dielectric constant ceramics, including barium and strontium...
Engineering the magnetic properties of acrylonitrile butadiene styrene-based co...
Merazzo, Karla J.; García Díez, Ander; Tubio, Carmen R.; Manchado, Juan Carlos; Malet Murillo, Ramón; Pérez, Marc; Costa, Pedro Filipe RibeiroThis work reports the engineering of the magnetic properties of composites based on acrylonitrile butadiene styrene (ABS) by the inclusion of different magnetic nanoparticles (MNP). ABS-based composites with different MNP, including permalloy, Fe3O4, CoFe2O4, Ni, and Co-carbon coated, with a 10 wt% content have been prepared and their morphological, electric, thermal, magnetic, and mechanical properties evaluat...
Ternary multifunctional composites with magnetorheological actuation and piezor...
Fernández Maestu, Josu; García Díez, Ander; Tubio, Carmen R.; Gómez, Ainara; Berasategui, Joanes; Costa, Pedro Filipe Ribeiro; Bou-Ali, M. MounirAdvances in the development and implementation of magnetorheological elastomers (MREs) have demonstrated their potential for vibration control and damping, among others. To increase further the applicability of MREs, the present work reports on MREs with piezoresistive self-sensing characteristics by adding conductive fillers. Multifunctional MREs are thus reported based on the styrene-ethylene-butylene-styrene...
Environmentally friendlier printable conductive and piezoresistive sensing mate...
Franco, Miguel Alexandre Martins; Motealleh, Azadeh; Costa, Carlos Miguel Silva; Perinka, Nikola; Ribeiro, Clarisse Marta Oliveira; Tubio, Carmen R.Flexible and conformable conductive composites have been developed using different polymers, including water-based polyvinylpyrrolidone (PVP), chemical-resistant polyvinylidene fluoride (PVDF), and elastomeric styrene-ethylene-butylene-styrene (SEBS) reinforced with nitrogen-doped reduced graphene oxide with suitable viscosity in composites for printable solutions with functional properties. Manufactured by scr...
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...
Printable lightweight polymer-based energy harvesting systems: materials, proce...
Rodrigues-Marinho, T.; Perinka, N.; Costa, Pedro Filipe Ribeiro; Lanceros-Mendez, S.Polymer-based flexible energy harvesting systems based on several physical phenomena such as piezo-, pyro-, thermo-, and triboelectric effects have become increasingly relevant for self-powered nano -generator devices to, as an example, replace batteries in remote or inaccessible places, or develop self -powered sensors. Tailored properties of the materials, combined with advanced manufacturing tech-nologies, w...
Graphene based printable conductive wax for low-power thermal actuation in micr...
Brito-Pereira, Ricardo; Ribeiro, Clarisse Marta Oliveira; Costa, Pedro Filipe Ribeiro; Correia, V.; Cardoso, Vanessa Fernandes; Lanceros-Mendez, S.Wax printing is one of the most widely used techniques to print hydrophobic barriers on hydrophilic microfluidic paper-based analytical devices (mu PADs) based on its simplicity, speed, and low cost, allowing large-scale production. Nonetheless, its function is just passive, without any action on fluids. Thus, this work proposes multifunctional hydrophobic composites based on conductive graphene nanoplatelets (...
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends with poly(caprolactone) and...
Tubio, Carmen R.; Valle, Xabier; Carvalho, Estela; Moreira, Joana; Costa, Pedro Filipe Ribeiro; Correia, Daniela M.; Lanceros-Mendez, S.Poly(hydroxybutyrate-co-hidroxyvalerate) (PHBV) is a biodegradable polymer, which is a potential substitute for plastics made from fossil resources. Due to its practical interest in the field of tissue engineering, packaging, sensors, and electronic devices, the demand for PHBV with specific thermal, electrical, as well as mechanical requirements is growing. In order to improve these properties, we have develop...
Smart and multifunctional materials based on electroactive poly(vinylidene fluo...
Costa, Carlos Miguel Silva; Cardoso, Vanessa Fernandes; Martins, Pedro Libânio Abreu; Correia, Daniela Maria Silva; Gonçalves, Renato FerreiraFrom scientific and technological points of view, poly(vinylidene fluoride), PVDF, is one of the most exciting polymers due to its overall physicochemical characteristics. This polymer can crystalize into five crystalline phases and can be processed in the form of films, fibers, membranes, and specific microstructures, being the physical properties controllable over a wide range through appropriate chemical mod...
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...