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Listar por palabra clave "Thermogravimetric analysis"

Mostrando ítems 1-20 de 20

A new geopolymeric binder from hydrated-carbonated cement

Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Monzó Balbuena, José Mª; Soriano Martínez, Lourdes; Mitsuuchi Tashima, Mauro (Elsevier, 2012-05)

This paper evaluates the use of hydrated Portland cement as the raw material in the production of geopolymers. The silicon and aluminium oxides needed for the geopolymerization process were produced by the carbonation of ...
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. ...
Assesssment of pozzolanic/hydraulic reactivity of vitreous calcium aluminosilicate (VCAS) ussing different methods

Mitsuuchi Tashima, Mauro; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria (Elsevier, 2016-04)

[EN] The aim of this paper is to assess the possibility of using vitreous calcium aluminosilicate (VCAS) as a supplementary cementitious material in the production of Portland cement mortars. The calcium hydroxide consumption ...
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 ...
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 ...
Characterization of Three Sugarcane Varieties as Agro-Residue for Bioenergy Use in the Ecuadorian Andes

Garcia Montoya, Juan; Quinteros, Omar; Chimbo-Yépez, Gabriel; Álvarez, Luís; Velázquez Martí, Borja (MDPI, 2023-12)

[EN] There is a growing trend toward the use of renewable sources to produce clean energy and mitigate the effects of climate change. Second-generation lignocellulose biomasses, such as agro-residues, comprise a potential ...
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 ...
Determination of the optimum parameters in the high resolution thermogravimetric analysis (HRTG) for cementitious materials

Ivan Tobón, Jorge; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Soriano Martínez, Lourdes; Restrepo Baena, Oscar Jaime (Akadémiai Kiadó, 2012)

In this article, the methodology to implementation of high resolution thermogravimetric analysis (HRTG) for construction materials like Portland cement pastes is presented. The aim of this technique is to make easier the ...
Diseño de electrodos híbridos de polianilina y nanocelulosa para dispositivos electrónicos de alto rendimiento

Moyá García, Jorge (Universitat Politècnica de València, 2018-09-27)

[ES] Debido a su renovabilidad, propiedades ópticas, térmicas y mecánicas extraordinarias, la celulosa nanoestructurada también conocida como nanocelulosa (NC), es decir, nanofibrillas de celulosa (CNF), nanocristales de ...
Estudio cinético de la descomposición térmica y termo-oxidativa de residuo de café en atmósfera inerte y oxidativa

Galdo, Antonella (Universitat Politècnica de València, 2021-09-06)

[ES] La creciente demanda de energía por parte de la población mundial, relacionada con la mejora de la calidad de vida, ha generado un aumento de la contaminación ambiental por el uso masivo de combustibles fósiles. En ...
Estudio de fuentes alternativas a la madera para la obtencion de celulosa

Dhia, Mehdi (Universitat Politècnica de València, 2021-10-22)

[ES] Este trabajo se dedica a estudiar tres fuentes alternativas a la madera para la obtención de la celulosa que son bagazo de alcachofa (Cynara scolymus), tallo de malva (Malva arborea) y espiga de maíz (Zea mays). Se ...
Estudio de la descomposición termo-oxidativa de los residuos de la producción de cerveza para su uso en procesos de valorización energética

Mascia, Nicola (Universitat Politècnica de València, 2021-09-01)

[ES] La acumulación de enormes cantidades de desechos alimentarios provoca cada año una gran degradación ambiental y, especialmente, una pérdida significativa de material valioso que de otro modo podría explotarse en otros ...
Evaluation of the pozzolanic activity of spent FCC catalyst/fly ash mixtures in Portland cement pastes

Velázquez Rodríguez, Sergio; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Soriano Martínez, Lourdes; Paya Bernabeu, Jorge Juan (ELSEVIER SCIENCE BV, 2016-05)

High pozzolanic activity of the residue spent catalytic cracking catalyst (FCC) has been reported by various authors in recent years. However, no report on the lime fixation of this residue when dosed together with other ...
Kinetic study of thermal degradation of chitosan as a function of deacetylation degree

Gamiz-Gonzalez, Mª Amparo; Correia, D.M.; Lanceros-Mendez, S.; Sencadas, V.; Gómez Ribelles, José Luís; Vidaurre, Ana (Elsevier, 2017-07-01)

[EN] Thermal degradation of chitosan with varying deacetylation degree (DD) ranging between 50 and 85% was analyzed by dynamic thermogravimetric analysis at different heating rates. The present study focused on the temperature ...
Microstructure, mechanical, and thermogravimetric characterization of cellulosic by-products obtained from biomass seeds

Rayón Encinas, Emilio; Ferrándiz Bou, Santiago; Rico Beneito, María Isabel; López Martínez, Juan; ARRIETA, Marina Patricia (Taylor & Francis, 2015-06-03)

The microstructural, thermal, and nanomechanical characterization of biomass by-products coming from the food industry were studied. Scanning electron microscopy showed a microstructure formed by polygonal grains. The ...
Mineralogical evolution of Portland cement blended with silica nanoparticles and its effect on mechanical strength

Tobón, J. I.; Paya Bernabeu, Jorge Juan; Borrachero Rosado, María Victoria; Restrepo Baena, Oscar Jaime (Elsevier, 2012-11)

Mineralogical analysis on pastes of Spanish Portland cement Type I, blended with nanosilica was carried out by conventional and high-resolution thermogravimetric analysis (TG-HRTG) and X-ray diffraction (XRD) in order to ...
Pozzolanic activity of a spent fluid catalytic cracking catalyst residue

Garcés, Pedro; Glasser, Fred P.; Brew, Daniel R.M.; Zornoza Gómez, Emilio Manuel; Paya Bernabeu, Jorge Juan (Thomas Telford (ICE Publishing), 2011)

The reaction between a spent fluid cracking catalyst (FC3R) residue and portlandite was monitored over 56 days using several material characterisation techniques. The results showed that the residue was heterogeneous and ...
Pozzolanic reactivity studies on a miomass-derived waste from sugar cane production: sugar cane straw ash (SCSA)

Moraes, J.C.B; Melges, J. L. P.; Akasaki, Jorge Luis; Tashima, M. M.; Soriano Martínez, Lourdes; Monzó Balbuena, José Mª; Borrachero Rosado, María Victoria; Paya Bernabeu, Jorge Juan (American Chemical Society, 2016-06)

Biomass has gained in importance as an energy source in recent years. One of the crops that presents interesting opportunities with regard to biomass is sugar cane. In Brazil, sugar cane production is increasing for alcohol ...
Thermal and thermo-oxidative characterisation of rice straw for its use in energy valorisation processes

Moliner, C.; Bosio, B.; Arato, E.; Ribes-Greus, A. (Elsevier, 2016)

[EN] The processes of pyrolysis and combustion of rice straw will be carried out in a spouted bed reactor. Both thermo-chemical processes were simulated in the first stage by multi-rate linear non-isothermal thermogravimetric ...
Thermal characterization of agro-industrial waste for its use in energy valorization processes

Primaz, Carmem Tatiane; TERUEL JUANES, ROBERTO; Gil-Castell, O.; Pascual-Jose, B.; Badia, J.D.; Ribes-Greus, A. (Universidad de Castilla-La Mancha José Antonio Almendros Ibáñez, 2019-06-14)

[EN] The aim of this work is to define, develop and evaluate a methodology for an improved and more sustainable management of waste, in particular, agricultural residues, turning them into a new source of energy and ...