Browsing by Author "López-Beceiro, Jorge"

Now showing items 1-20 of 24

    • A Logistic Approach for Kinetics of Isothermal Pyrolysis of Cellulose 

      López-Beceiro, Jorge; Díaz-Díaz, Ana-María; Álvarez García, Ana; Tarrío-Saavedra, Javier; Naya, Salvador; Artiaga, Ramón (MDPI, 2021-03)
      [Abstract] A kinetic model is proposed to fit isothermal thermogravimetric data obtained from cellulose in an inert atmosphere at different temperatures. The method used here to evaluate the model involves two steps: (1) ...

    • A relatively simple look at the rather complex crystallization kinetics of PLLA 

      López-Beceiro, Jorge; Díaz-Díaz, Ana-María; Fernández-Pérez, Enrique; Ferreira, Ignatius; Focke, Walter W.; Artiaga, Ramón (MDPI, 2023-04-14)
      [Abstract] This work demonstrates that, despite the existence of a significant number of works on PLA crystallization, there is still a relatively simple way, different from those already described, in which its complex ...

    • Application of the Time–Temperature Superposition Principle to Predict Long-Term Behaviour of an Adhesive for Use in Shipbuilding 

      Souto Silvar, Daniel Abelardo; Álvarez García, Ana; Díaz-Díaz, Ana-María; Rodríguez-Dopico, Francisco J.; López-Beceiro, Jorge (Springer Nature, 2024-02)
      [Abstract]: The use of adhesives in the marine sector is rather limited at the time being, but their use in specific areas of the ship would be an advantage due, among other things, to their low weight and low stress ...

    • Comparison by thermal analysis of Joule‑cured versus oven‑cured composites 

      Vázquez, Laura; López-Beceiro, Jorge; Díaz-Díaz, Ana-María; Álvarez García, Ana; Pereira Rodríguez, Mercedes; Artiaga, Ramón (Springer, 2024-03-20)
      [Abstract]: The current technology for curing high-performance composites, such as those used in industries like such as aeronautics and the automotive industry, is based on the use of autoclaves, where the material is ...

    • Crystallization kinetics of a commercial poly(lactic acid) based on characteristic crystallization time and optimal crystallization temperature 

      Díaz-Díaz, Ana-María; López-Beceiro, Jorge; Yanchun, Li; Cheng, Yi; Artiaga, Ramón (Springer, 2020-07-23)
      [Abstract]: A model is proposed to fit differential scanning calorimetry (DSC) isothermal crystallization curves obtained from the molten state at different temperatures. A commercial 3D printing polylactic acid (PLA) ...

    • Discovery of Colossal Breathing-Caloric Effect under Low Applied Pressure in the Hybrid Organic–Inorganic MIL-53(Al) Material 

      García Ben, Javier; López-Beceiro, Jorge; Artiaga, Ramón; Salgado-Beceiro, Jorge; Delgado Ferreiro, Ignacio; Kolen'ko, Yury V.; Castro-García, Socorro; Señarís-Rodríguez, M. A.; Sánchez-Andújar, Manuel; Bermúdez-García, Juan Manuel (American Chemical Society, 2022-03-30)
      [Abstract] In this work, “breathing-caloric” effect is introduced as a new term to define very large thermal changes that arise from the combination of structural changes and gas adsorption processes occurring during ...

    • Dynamic rheological comparison of silicones for podiatry applications 

      Díaz-Díaz, Ana-María; Sánchez Silva, Bárbara; Tarrío-Saavedra, Javier; López-Beceiro, Jorge; Janeiro Arocas, Julia María; Gracia-Fernández, Carlos; Artiaga, Ramón (Elsevier, 2018-05-26)
      [Abstract]: This work shows an effective methodology to evaluate the dynamic viscoelastic behavior of silicones for application in podiatry. The aim is to characterize, compare their viscoelastic properties according to ...

    • Empowering CO2Eco-Refrigeration With Colossal Breathing-Caloric-Like Effects in MOF-508b 

      Gelpi, María; García Ben, Javier; Rodríguez-Hermida, Sabina; López-Beceiro, Jorge; Artiaga, Ramón; Baaliña Insua, Alvaro; Romero Gómez, Manuel; Romero Gómez, Javier; Zaragoza, Sonia; Salgado-Beceiro, Jorge; Walker, Julian; McMonagle, Charles James; Castro-García, Socorro; Sánchez-Andújar, Manuel; Señarís-Rodríguez, M. A.; Bermúdez-García, Juan Manuel (Wiley, 2024)
      [Abstract] Today,≈20% of the electric consumption is devoted to refrigeration; while,≈50% of the final energy is dedicated to heating applications. In this scenario,many cooling devices and heat-pumps are transitioning ...

    • Hybrid Lead Halide [(CH₃)₂NH₂]PbX₃ (X = Cl⁻ and Br⁻) Hexagonal Perovskites With Multiple Functional Properties 

      García-Fernández, Alberto; Juárez-Pérez, Emilio J.; Bermúdez-García, Juan Manuel; Llamas-Saiz, Antonio L.; Artiaga, Ramón; López-Beceiro, Jorge; Señarís-Rodríguez, M. A.; Sánchez-Andújar, Manuel; Castro-García, Socorro (Royal Society of Chemistry (UK), 2019-07-22)
      [Abstract] We have been able to prepare two new lead halides with the formula DMAPbX₃ (where DMA is dimethylammonium and X is Cl⁻ or Br⁻), which display a 4H-hexagonal perovskite polytype, an unusual crystal structure in ...

    • Isothermal Crystallization Kinetics of Commercial PA66 and PA11 

      Vázquez, Laura; Pereira, Mercedes; Díaz-Díaz, Ana-María; López-Beceiro, Jorge; Artiaga, Ramón (Springer, 2024-10)
      [Abstract] This study is aimed at investigating the crystallization kinetics of two structurally related polymers, Nylon 6,6 (PA66) and Nylon 11 (PA11), by differential scanning calorimetry (DSC) in the scope of a ...

    • Kinetics of Thermal Degradation of Cellulose: Analysis Based on Isothermal and Linear Heating Data 

      López-Beceiro, Jorge; Álvarez García, Ana; Sebio-Puñal, Sebio; Zaragoza, Sonia; Álvarez García, Begoña; Díaz-Díaz, Ana-María; Janeiro Arocas, Julia María; Artiaga, Ramón (NC State University, 2016-05-16)
      [Abstarct]: In spite of the many studies performed, there is not yet a kinetic model to predict the thermal degradation of cellulose in isothermal and non-isothermal conditions for the full extent of conversion. A model ...

    • Modelización de la transición vítrea con relajación entálpica a partir de datos térmicos 

      López-Beceiro, Jorge (2011)
      [Resumen] El objetivo de este trabajo es modelizar la curva de flujo de calor total que se obtiene a partir de ensayos de calorimetría diferencial de barrido (DSC) estándar en el rango de temperaturas de la transición ...

    • Near Room Temperature Dielectric Transition in the Perovskite Formate Framework [(CH₃)₂NH₂][Mg(HCOO)₃] 

      Pato Doldán, Breogán; Sánchez-Andújar, Manuel; Gómez Aguirre, Lilián Claudia; Yáñez, Susana; López-Beceiro, Jorge; Gracia-Fernández, Carlos; Haghighirad, A. A.; Ritter, F.; Castro-García, Socorro; Señarís-Rodríguez, M. A. (The Royal Society of Chemistry, 2012-05)
      [Abstract] We report that the hybrid organic–inorganic compound [(CH₃)₂NH₂][Mg(HCOO)₃] shows a marked dielectric transition around Tₜ ∼ 270 K, associated to a structural phase transition from SG R[3 with combining macron]c ...

    • Properties of Mosquito Repellent-Plasticized Poly(lactic acid) Strands 

      Mapossa, Antonio B.; López-Beceiro, Jorge; Díaz-Díaz, Ana-María; Artiaga, Ramón; Moyo, Dennis; Mphateng, Thabang N.; Focke, Walter W. (MDPI, 2021-09)
      [Abstract] Poly(lactic acid) (PLA) is an attractive candidate for replacing petrochemical polymers because it is fully biodegradable. This study investigated the potential of PLA as a sustainable and environmentally friendly ...

    • Structural, Thermal and Functional Properties of a Hybrid Dicyanamide-Perovskite Solid Solution 

      García Ben, Javier; Salgado-Beceiro, Jorge; Delgado Ferreiro, Ignacio; Dafonte Rodríguez, Pedro; López-Beceiro, Jorge; Artiaga, Ramón; Castro-García, Socorro; Sánchez-Andújar, Manuel; Bermúdez-García, Juan Manuel; Señarís-Rodríguez, M. A. (MDPI, 2022-06-18)
      [Abstract]: In Solid-State Chemistry, a well-known route to obtain new compounds and modulate their properties is the formation of solid solutions, a strategy widely exploited in the case of classical inorganic perovskites ...

    • Structure and thermal property relationships in the thermomaterial di-n-butylammonium tetrafluoroborate for multipurpose cooling and cold-storage 

      García Ben, Javier; Bermúdez-García, Juan Manuel; Delgado Ferreiro, Ignacio; López-Beceiro, Jorge; Artiaga, Ramón; Castro-García, Socorro; Sánchez-Andújar, Manuel; Señarís-Rodríguez, M. A. (Royal Society of Chemistry, 2023-11-07)
      [Abstract]: Nowadays around 46% of food production around the world requires refrigeration, which is generally provided either by active vapour-compression (based on refrigerants with liquid–gas transitions) or passive ...

    • Temperature Simulation of Three-Point Bending Geometry in a Dynamic Mechanical Analyzer 

      Gracia-Fernández, Carlos; Álvarez García, Ana; Gómez Barreiro, Silvia; López-Beceiro, Jorge; Artiaga, Ramón (Elsevier, 2021-01)
      [Abstract] Dynamic mechanical analysis (DMA) is a thermo-analytical technique that is widely used as a part of polymer characterization. One of the most common tests consists of measuring viscoelastic properties as a ...

    • The Complexity of Lignin Thermal Degradation in the Isothermal Context 

      López-Beceiro, Jorge; Díaz-Díaz, Ana-María; Álvarez García, Ana; Tarrío-Saavedra, Javier; Naya, Salvador; Artiaga, Ramón (MDPI, 2021-07)
      [Abstract] Thermal degradation of lignin in nitrogen atmosphere is evaluated by linear heating and isothermal tests. While linear heating suggests that thermal decomposition in the 200–400 °C range mainly consists of a ...

    • The effect of marine ageing on the mechanical properties of a structural adhesive 

      Souto Silvar, Daniel Abelardo; Álvarez García, Ana; Díaz-Díaz, Ana-María; Rodríguez-Dopico, Francisco J.; López-Beceiro, Jorge (Springer, 2023)
      [Abstract] The aim of this work is to study the behaviour of a structural adhesive in an aggressive setting such as the marine environment. For this purpose, an ageing procedure is carried out under marine environmental ...

    • Thermal and rheological comparison of adhesives 

      Sánchez Silva, Bárbara; Díaz-Díaz, Ana-María; Tarrío-Saavedra, Javier; López-Beceiro, Jorge; Gracia-Fernández, Carlos; Artiaga, Ramón (Springer, 2019-10-10)
      [Abstract]: In some industrial sectors such as naval construction, the use of adhesives is still limited to some specific applications. However, shipbuilders, academia and classification societies are cooperating to expand ...