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Mostrando ítems 1-14 de 14

Acoustic analogue of graphene: observation of Dirac cones in acoustic surface waves

Torrent Martí, Daniel; Sánchez-Dehesa Moreno-Cid, José (American Physical Society, 2012-04-27)

We demonstrate the presence of Dirac cones in the dispersion relation of acoustic waves propagating on the surface of a plate of methyl methacrylate containing a honeycomb lattice of cylindrical boreholes. This structure ...
Characterization of Crosslinked Poly(vinyl alcohol)-Based Membranes with Different Hydrolysis Degrees for Their Use as Electrolytes in Direct Methanol Fuel Cells

Martinez-Felipe, Alfonso; Moliner Estopiñán, Cristina Elia; Imrie, Corrie Thomas; Ribes Greus, María Desamparados (Wiley, 2012-04-15)

The effect of the degree of hydrolysis of poly(vinyl alcohol) (PVA) substrates on the preparation and properties of crosslinked membranes prepared via esterification with sulfosuccinic acid (SSA) has been studied using ...
Design of enzyme-mediated controlled release systems based on silica mesoporous supports capped with ester-glycol groups

Agostini, Alessandro; Mondragón Martínez, Laura; Pascual Vidal, Lluís; Aznar Gimeno, Elena; Coll Merino, Mª Carmen; Martínez Mañez, Ramón; Sancenón Galarza, Félix; Soto Camino, Juan; Marcos Martínez, María Dolores; Amoros del Toro, Pedro; Costero, Ana M.; Parra, Margarita; Gil, Salvador (American Chemical Society, 2012-09-21)

[EN] An ethylene glycol-capped hybrid material for the controlled release of molecules in the presence of esterase enzyme has been prepared. The final organic-inorganic hybrid solid S1 was synthesized by a two-step procedure. ...
Electrochemical synthesis of polyaniline on conducting fabrics of polyester covered with polypyrrole/PW12O403-. Chemical and electrochemical characterization

Molina Puerto, Javier; Fernández Sáez, Javier; Del Río García, Ana Isabel; Bonastre Cano, José Antonio; Cases Iborra, Francisco Javier (Elsevier, 2011-06)

Polyaniline (Pani) has been electrochemically polymerized on conducting fabrics of polyester covered with polypyrrole/PW 12O 40 3-, obtaining a double conducting polymer layer. Electrochemical synthesis was performed by ...
Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites

Pandis, C.; Logakis, E.; Kyritsis, A.; Pissis, P.; Vodnik, V. V.; Dzunuzovic, E.; Nedeljkovic, J. M.; Djokovic, V.; Rodríguez Hernández, José Carlos; Gómez Ribelles, José Luís (Elsevier, 2011)

Dynamic mechanical-thermal analysis (DMTA), differential scanning calorimetry (DSC), thermally stimulated depolarization currents (TSDC) and, mainly, broadband dielectric relaxation spectroscopy (DRS) were employed to ...
Improvement of adhesion properties of polypropylene substrates by methylmethacrylate UV photografting surface treatment

Balart Gimeno, Javier Francisco; Fombuena Borrás, Vicent; España, J.M.; Sánchez Nacher, Lourdes; Balart Gimeno, Rafael Antonio (Elsevier, 2012-01)

Polypropylene is a widely used commodity plastic from an industrial point of view. Typical applications include both low and high technological content, as it has a good balance between overall properties, processability ...
Occurrence of priority pollutants in WWTP effluents and Mediterranean coastal waters of Spain

Martí Ortega, Nuria; Aguado García, Daniel; Segovia Martínez, Laura; Bouzas Blanco, Alberto; Seco Torrecillas, Aurora (Elsevier, 2011)

A comprehensive study aimed at evaluating the occurrence, significance of concentrations and spatial distribution of priority pollutants (PPs) along the Comunidad Valenciana coastal waters (Spain) was carried out in order ...
Polyaniline coated conducting fabrics. Chemical and electrochemical characterization

Molina Puerto, Javier; Esteves, M.F.; Fernández Sáez, Javier; Bonastre Cano, José Antonio; Cases Iborra, Francisco Javier (Elsevier, 2011-10)

Polyaniline coated conducting fabrics have been obtained by chemical oxidation of aniline by potassium peroxydisulfate on polyester fabrics. Two different acids have been employed to carry out the synthesis (HCl and H 2SO ...
Reacciones tipo click para la síntesis de esteres y amidas de manera más sosteniblea partir de derivados de la ciclopropenona

Palomar de Lucas, Brenda (Universitat Politècnica de València, 2021-10-20)

[ES] La cicloadición 1,3-dipolar entre alquinos y azidas ("Click Chemistry") catalizada por cobre (I), para formar 1,2,3-triazoles, es una de las reacciones más populares debido a su fiabilidad, especificidad y ...
Síntesis y caracterización de complejos de paladio inmovilizados en materiales grafénicos. Estudio de su actividad catalítica en reacciones de carbonilación oxidativa

Méndez Quintero, María Camila (Universitat Politècnica de València, 2020-10-16)

[ES] En las últimas décadas, el grafeno ha despertado un gran interés en campos como la catálisis y la ciencia de los materiales debido a sus extraordinarias propiedades tales como su elevada área superficial y su ...
Study of the electrical properties of novel hybrid organic-inorganic conducting textiles of polypyrrole-phosphotungstate-polyester using electrochemical impedance spectroscopy

Bonastre Cano, José Antonio; Molina Puerto, Javier; Del Río García, Ana Isabel; Galván, J. C.; Cases Iborra, Francisco Javier (Elsevier, 2011-09)

The electrical properties of novel hybrid organic-inorganic conducting fabrics of polyester (PES) coated with polypyrrole-PW12O 403- (PPy-POM) have been tested for dry samples and specimens immersed in different pH solutions ...
Surface modification of polypropylene substrates by UV photografting of methyl methacrylate (MMA) for improved surface wettability

Balart Gimeno, Javier Francisco; Fombuena Borrás, Vicent; Boronat Vitoria, Teodomiro; Reig Pérez, Miguel Jorge; Balart Gimeno, Rafael Antonio (Springer Verlag (Germany), 2012-03)

Despite polypropylene is one of the most used commodity plastics, its adhesion properties are remarkably restricted by its non-polar nature which leads to low wetting properties and, consequently, poor adhesion behavior. ...
The effect of temperature and pressure on thermodynamic properties of diesel and biodiesel fuels

Payri, Raul; Salvador Rubio, Francisco Javier; Gimeno, Jaime; Bracho Leon, Gabriela (Elsevier, 2011-03)

The current work focuses on the study of the influence of pressure and temperature on three important thermodynamic properties: speed of sound, compressibility and density of common diesel fuels. The sample fuels studied ...
Volatile Profile of Wall Rocket Baby-Leaves (Diplotaxis erucoides) Grown under Greenhouse: Main Compounds and Genotype Diversity

Guijarro-Real, Carla; Rodríguez Burruezo, Adrián; Fita, Ana (MDPI, 2020-06)

[EN] Wall rocket is a leafy vegetable with pungent flavor related to the presence of isothiocyanates (ITCs). Despite interest in it as a crop of high organoleptic quality, the variability of the volatile profile in the ...