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Listar por autor "López Martínez, Juan"

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A Deeper Microscopic Study of the Interaction between Gum Rosin Derivatives and a Mater-Bi Type Bioplastic

Aldas-Carrasco, Miguel Fernando; Rayón, Emilio; López-Martínez, Juan; Arrieta, Marina P. (MDPI AG, 2020-01-16)

[EN] The interaction between gum rosin and gum rosin derivatives with Mater-Bi type bioplastic, a biodegradable and compostable commercial bioplastic, were studied. Gum rosin and two pentaerythritol esters of gum rosin ...
A new bio-based fibre-reinforced polymer obtained from sheep wool short fibres and PLA

Fernando Aldas Carrasco, Miguel; Rouault, Nicolas Jerome; Ferri Azor, Jose Miguel; López-Martínez, Juan; Samper Madrigal, María-Dolores (ICE Publishing Ltd., 2020-06)

[EN] Within the cheese industry is used the milk of a specific species of sheep whose wool is not suitable for the fibre industry. Therefore, this fibre becomes a waste by-product. To take advantage of this waste, the ...
A New Route of Valorization of Petrochemical Wastewater: Recovery of 1,3,5-Tris (4-tert-butyl-3-hydroxy-2,6-dimethyl benzyl)¿1,3,5-triazine-2,4,6-(1H,3H,5H)-trione (Cyanox 1790) and Its Subsequent Application in a PP Matrix to Improve Its Thermal Stability

Hernández-Fernández, Joaquin; Ortega-Toro, Rodrigo; López-Martínez, Juan (MDPI AG, 2023-03)

[EN] The various chemicals in industrial wastewater can be beneficial for improving its circularity. If extraction methods are used to capture valuable components from the wastewater and then recirculate them throughout ...
Aditivación de materiales biodegradables mediante el uso de derivados de colofonia

Pavón Vargas, Cristina Paola (Universitat Politècnica de València, 2023-01-16)

[ES] El objetivo general de la presente tesis doctoral fue aditivar polímeros biodegradables con colofonia y sus derivados mediante el uso de técnicas de procesamiento convencionales y no convencionales. En esta tesis se ...
Agx(SR) Nanoclusters supported on zeolites as catalysts for environmental processes

Peinado Terol, Álvaro (Universitat Politècnica de València, 2018-12-07)

[EN] In this Master Thesis, the synthesis and isolation of atomically designed silver clusters have been made. The clusters have been prepared with a controlled number of metallic atoms, in particular ...
Aplicación de tecnología de escaneo 3d para verificación de piezas del mundo del automóvil

Risent Rodríguez, Jérica María (Universitat Politècnica de València, 2017-07-07)

El presente proyecto tiene como objetivo servir de complementación al presentado como PFC de Ing. Técnica en Diseño Industrial. En él se analizaban las posibles aplicaciones de la tecnología láser para el escaneo de ...
Aplicación del análisis de imágenes a la determinación de la orientación de fibra larga de vidrio en diferentes condiciones de proceso

Ferrándiz Bou, Santiago (Universitat Politècnica de València, 2008-05-06)

El uso de materiales reforzados con fibra larga de vidrio ha evolucionado de manera creciente en los últimos años. Este hecho ha provocado que se necesite conocer el comportamiento de determinadas características mecánicas ...
Aprendizaje activo y cooperativo en el laboratorio de Nanotecnología para realizar estructuras con electrospinning/electrospraying

Pavón-Vargas, Cristina Paola; Aldas-Carrasco, Miguel Fernando; Rosa-Ramírez, Harrison de la; López-Martínez, Juan (Universitat Politècnica de València, 2019-06-19)

[EN] In this work, we discuss the application of an active and collaborative teaching strategy in the development of a practice in the laboratory class of Nanomaterials, for first-year students of the Master Degree in ...
Aprendizaje basado en proyectos en la obtención de papel reciclado en la asignatura de Materiales Ecoeficientes

Ferri Azor, José Miguel; Rosa Ramírez, Harrison de la; Arrieta Dillón, Marina; Samper Madrigal, María Dolores; López Martínez, Juan (Editorial Universitat Politècnica de València, 2021-09-28)

[EN] During the 2019/2020 academic year, project-based learning has been introduced in the development of a laboratory practice of the Eco-efficient Materials subject, given in the second year of the University Master's ...
Autocatalytic influence of different levels of arsine on the thermal stability and pyrolysis of polypropylene

Hernández-Fernández, Joaquín; López-Martínez, Juan (Elsevier, 2022-01)

[EN] In this article, the pyrolysis and thermo-degradation of 11 virgin-polypropylene (virgin-PP) with different levels of arsenic in its polymer matrix, was carried out in a discontinuous quartz reactor at 500 degrees C. ...
Bilayer films of poly(epsilon-caprolactone) electrosprayed with gum rosin microspheres: Processing and characterization

Pavón-Vargas, Cristina Paola; Aldas, Miguel; Rosa-Ramírez, Harrison de la; Samper, María-Dolores; ARRIETA, Marina Patricia; López-Martínez, Juan (John Wiley & Sons, 2021-09)

[EN] Bilayer systems, consisting of electrosprayed gum rosin microspheres (eGR) and poly(epsilon-caprolactone) (PCL), were prepared. First, the electrospraying processing conditions of GR in two different solvents, ...
Bionanocomposite films based on plasticized PLA PHB/cellulose nanocrystal blends

ARRIETA, Marina Patricia; Fortunati, E.; Dominici, F.; López Martínez, Juan; Kenny, J. M. (Elsevier, 2015-05-05)

Optically transparent plasticized poly(lactic acid) (PLA) based bionanocomposite films intended for food packaging were prepared by melt blending. Materials were plasticized with 15 wt% of acetyl(tributyl citrate) (ATBC) ...
Cambios en la estructura cuticular Ornithodoros erraticus hembra durante el proceso de alimentación

ARRIETA, Marina Patricia; Ferrándiz Bou, Santiago; Rayón Encinas, Emilio; López Martínez, Juan (Universidad de Concepción (Chile), 2013)

[EN] Ectoparasite acari increases their size several orders of magnitude during feeding. Find out the mechanism through which the young stiff cuticle increases its volume, could be useful to develop novel formulations that ...
Characterization of PLA-limonene blends for food packaging applications

Arrieta, Marina Patricia; López Martínez, Juan; Ferrándiz Bou, Santiago; Peltzer, Mercedes Ana (Elsevier, 2013-06)

Polymers derived from renewable resources are now considered as promising alternatives to traditional petro-polymers as they mitigate current environmental concerns (raw renewable materials/biodegradability). D-limonene ...
Characterization of selectively etched halloysite nanotubes by acid treatment

Garcia-Garcia, D.; Ferri, J.M.; Ripoll, L.; Hidalgo, M.; López-Martínez, Juan; Balart, Rafael (Elsevier, 2017)

[EN] Halloysite nanotubes (HNTs) are a type of naturally occurring inorganic nanotubes that are characterized by a different composition between their external and internal walls. The internal walls are mainly composed of ...
Characterization of the curing process of vinyl plastisols with epoxidized linseed oil as a natural-based plasticizer

Fenollar Gimeno, Octavio Ángel; García Sanoguera, David; Sánchez Nacher, Lourdes; López Martínez, Juan; Balart Gimeno, Rafael Antonio (Wiley-Blackwell, 2012-05-05)

In this work, we have evaluated the curing process of a natural-based plasticizer, epoxidized linseed oil, as a possible alternative to phthalate substitution for polyvinyl chloride. Several curing times ranging from 6 to ...
Combined effect of poly(hydroxybutyrate) and plasticizers on polylactic acid properties for film intended for food packaging

ARRIETA, Marina Patricia; Samper Madrigal, María Dolores; López Martínez, Juan; JIMENEZ MIGALLON, ALFONSO (Springer Verlag (Germany), 2014-12)

Poly(lactic acid) PLA, and poly(hydroxybutyrate) PHB, blends were processed as films and characterized for their use in food packaging. PLA was blended with PHB to enhance the crystallinity. Therefore, PHB addition strongly ...
Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices

Pavón-Vargas, Cristina Paola; Aldás-Carrasco, Miguel Fernando; Hernandez Fernandez, Joaquin Alejandro; López-Martínez, Juan (John Wiley & Sons, 2022-03-05)

[EN] There is a growing interest in the use of non-polluting compounds, which come from renewable sources, and which performance in their scope is equivalent to their synthetic similes. In this work, five types of rosins ...
Control of Biodegradability Under Composting Conditions and Physical Performance of Poly (Lactic Acid) Based Materials Modified with Phenolic-Free Rosin Resin

Rosa-Ramírez, Harrison de la; Aldas, Miguel; Ferri, J.M; Pawlak, Franciszek; López-Martínez, Juan; Samper, María-Dolores (Springer-Verlag, 2023-12)

[EN] Biodegradable materials based on poly (lactic acid) (PLA) and a phenolic free modified rosin resin were obtained and studied to control the biodegradability under composting conditions of the materials. The resin was ...
Correlación entre las propiedades macro, micro y nanomecánicas en polímeros termoplásticos biodegradables

Arrieta, Marina Patricia; Ferrándiz Bou, Santiago; López Martínez, Juan; Rayón Encinas, Emilio (Universitat Politècnica de Valencia, 2016-07-24)

[EN] In this work a study of the mechanical properties of a biodegradable polymer, poly(lactic acid) (PLA), and its variation due to the addition of 25 wt % of another biodegradable polymer, poly(hydroxybutyrate) (PHB) ...