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Listar por palabra clave "Differential scanning calorimetry"

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Antioxidant and antibacterial effects of natural phenolic compounds on green composite materials

España Giner, José Manuel; Fages, E.; Moriana Torró, Rosana; Boronat Vitoria, Teodomiro; Balart Gimeno, Rafael Antonio (Wiley-Blackwell, 2012-08)

[EN] The aim of this study is to establish the thermal performance of a biocomposite (Arbofill kokos (R)), stabilized with different natural phenolic additives, to check the antioxidant capacity of the resulting compounds. ...
Assessment of parameters influencing fiber characteristics of electrospun Poly(ethyl methacrylate) scaffolds

Gómez-Tejedor, José Antonio; Van Overberghe, Niek; Rico Tortosa, Patricia María; Gómez Ribelles, José Luís (Elsevier, 2011)

This work evaluates the influence of electrospinning process parameters on the mean diameter and standard deviation of fiber diameters in electrospun poly(ethyl methacrylate) (PEMA). Processing conditions were selected ...
Biodegradable poly(L-lactide) and polycaprolactone block copolymer networks

Escobar Ivirico, Jorge Luis; Salmerón Sánchez, Manuel; Gómez Ribelles, José Luís; Monleón Pradas, Manuel (Wiley, 2011)

New biodegradable block copolymer networks were synthesized from methacrylate-terminated poly(L-lactide) (mLA) and polycaprolactone (mCL) macromers. This allowed the realization of a series of materials in which the macromer ...
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 ...
Estudio de la movilidad molecular y las propiedades mecánicas en polihidroxiuretanos libres de diisocianatos en función de la humedad ambiental

Bujalance Calduch, Carlos (Universitat Politècnica de València, 2021-09-06)

[ES] Los poliuretanos son uno de los plásticos más utilizados en la actualidad. Sin embargo, su producción presenta importantes problemas ambientales debido a la toxicidad de los isocianatos, lo que ha motivado la búsqueda ...
Evaluation of Natural Rubber Specific Heat Capacity at High Pressures from DSC Experimental Data at Atmospheric Pressure

Ortiz Serna, Mª Pilar; Díaz Calleja, Ricardo; Sanchis Sánchez, María Jesús (John Wiley & Sons, 2012)

[EN] The natural rubber specific heat capacity dependence on pressure was estimated on thermodynamic grounds on the basis of the values empirically determined from differential scanning calorimetry data, (in the temperature ...
Glass transition and dynamics in BSA-water mixtures over wide ranges of composition studied by thermal and dielectric techniques

Panagopoulou, A.; Kyritsis, A.; Sabater i Serra, Roser; Gómez Ribelles, José Luís; Shinyashiki, N.; Pissis, P. (Elsevier, 2011)

Protein-water dynamics in mixtures of water and a globular protein, bovine serum albumin (BSA), was studied over wide ranges of composition, in the form of solutions or hydrated solid pellets, by differential scanning ...
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 ...
Influence of cooling conditions during 3D printing on the switching temperature of a TPU with SME

Lang, Anette; Boca, Marius-Andrei; Sover, Alexandru (Editorial Universitat Politècnica de València, 2023-01-10)

[EN] Shape memory polymers (SMP) are materials with a special structure, designed to react to a certain stimulus. Using such SMPs with 3D printing technology opens up further fields of application thus providing for the ...
Microwave calorimetry using X-rays

Nicula, R.; Stir, M.; Wurm, A.; Catalá Civera, José Manuel; Ishizaki, K.; Vaucher, S.; Zhuravlev, E.; Schick, C. (Elsevier, 2011-11-10)

An alternative approach for microwave calorimetry is proposed which relies on the synchrotron radiation powder diffraction technique as well as on the Grüneisen formalism for the analysis of thermal expansion. Cobalt was ...
Microwave sensor system for continuous monitoring of adhesive curing processes

García Baños, Beatriz; Catalá Civera, José Manuel; Penaranda-Foix, Felipe L.; Canós Marín, Antoni Josep; Sahuquillo Navarro, Oscar (IOP Publishing: Hybrid Open Access, 2012-03)

A microwave sensor system has been developed for monitoring adhesive curing processes. The system provides continuous, real-time information about the curing progress without interfering with the reaction. An open-coaxial ...
Molecular mobility in biodegradable poly(e-caprolactone)/poly(hydroxyethyl acrylate) networks

Sabater i Serra, Roser; Kyritsis, A.; Escobar Ivirico, J.L.; Gómez Ribelles, José Luís; Pissis, P.; Salmerón Sánchez, Manuel (SPRINGER, 2011)

[EN] Poly( ε -caprolactone)/poly(hydroxyethyl acrylate) networks have been investigated by thermally stimulated depolarization currents (TSDC) and differential scanning calorimetry (DSC). The introduction of hydrophilic ...
Poly (lactic acid)/D-limonene/ZnO bio-nanocomposites with antimicrobial properties

Sepúlveda, Francesca Antonella; Rivera, Francisca; Loyo, Carlos; Canales, Daniel; Moreno-Serna, Viviana; Benavente, Rosario; Rivas, Lina María; Ulloa, Maria Teresa; Gil-Castell, Oscar; Ribes-Greus, Amparo; Ortiz, J. Andrés; Zapata, Paula A. (John Wiley & Sons, 2022-01-20)

[EN] Antimicrobial films of poly (lactic acid) (PLA)/D-limonene/zinc oxide (ZnO)-based bio-nanocomposites were prepared via melt compounding and subsequent thermocompression. D-limonene was incorporated at concentrations ...
Polyvinyl alcohol nanofiber reinforced Nafion membranes for fuel cell applications

Mollá Romano, Sergio; Compañ Moreno, Vicente (Elsevier, 2011-04-15)

This work has been focused on the preparation and characterization of composite membranes with thickness between 19 and 97 mu m and containing Nafion(R) infiltrated into a porous mat obtained by electrospinning of an aqueous ...
Properties of Biobased Epoxy Resins from Epoxidized Soybean Oil (ESBO) Cured with Maleic Anhydride (MA)

España Giner, José Manuel; Sánchez Nacher, Lourdes; Boronat Vitoria, Teodomiro; Fombuena Borrás, Vicent; Balart Gimeno, Rafael Antonio (Springer Verlag (Germany), 2012-11)

[EN] Epoxidized soybean oil (ESBO), obtained from a renewable resource was used in the production of thermoset resins. Samples of the ESBO were initially treated with maleic anhydride, equal mixture of catalyst (1,3-butanediol ...
Relevant factors for the eco-design of polylactide/sisal biocomposites to control biodegradation in soil in an end-of-life scenario

Badia, J.D.; Strömberg, E.; Kittikorn, T.; Ek, M.; Karlsson, S.; Ribes-Greus, A. (Elsevier, 2017-09)

[EN] The eco-design considers the factors to prepare biocomposites under an end-of-life scenario. PLA/sisal biocomposites were obtained from amorphous polylactide and sisal loadings of 10, 20 and 30 wt% with and without ...
Study of the dielectric relaxation of poly(phenylpropyl acrylate) and poly(phenylpropyl methacrylate): effect of slight differences in chemical structure

Ortiz Serna, Mª Pilar; Sanchis Sánchez, María Jesús; Redondo Foj, María Belén; Carsí Rosique, Marta; Díaz Calleja, Ricardo; LEIVA, ANGEL; Gargallo, L.; Radic, D. (Wiley, 2015-12)

A comparative study of the dielectric relaxational behaviour of two structurally close polymers, containing aromatic side groups, was carried out in order to analyse how slight differences in the chemical structure affect ...
Study of the puffing process of amaranth seeds by dielectric spectroscopy

Castro Giráldez, Marta; Fito Suñer, Pedro José; Prieto, J. M.; Andrés Grau, Ana María; Fito Maupoey, Pedro (Elsevier, 2012-05)

[EN] Amaranth (Amaranth spp) is considered a pseudocereal with valuable nutritional characteristics. Amaranth grain is commonly used in cereal industry as expanded product obtained from the puffing operation. In this work, ...
The effect of temperature on the geopolymerization process of a metakaolin-based geopolymer

Muñiz-Villarreal, M. S.; Manzano Ramirez, Alejandro; Sampieri-Bulbarela, S.; Gasca-Tirado, J. Ramón; Reyes-Araiza, José Luis; Rubio-Ávalos, José Carlos; Pérez Bueno, J. J.; Apatiga, L. M.; Zaldivar-Cadena, A.; Amigó Borrás, Vicente (Elsevier, 2011-03-31)

This paper describes the effect of different curing temperatures on the geopolymerization process, physical, mechanical and optical properties of a metakaolin-based geopolymer activated by alkali. The influence of different ...
The role of crystalline, mobile amorphous and rigid amorphous fractions in the performance of recycled poly (ethylene terephthalate) (PET)

Badia, J.D.; Strömberg, Emma; Karlsson, Sigbritt; Ribes-Greus, A. (ELSEVIER SCI LTD, 2012)

[EN] The action of thermo-mechanical degradation induced by mechanical recycling of poly(ethylene terephthalate) was simulated by successive injection moulding cycles. Degradation reactions provoked chain scissions and a ...