Beatriz Merillas
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View article: Insights on the Influence of the Drying Method and Surface Wettability on the Final Properties of Silica Aerogels
Insights on the Influence of the Drying Method and Surface Wettability on the Final Properties of Silica Aerogels Open
In the synthesis of aerogels, the influence of the drying process on the nanostructure is an issue of utmost relevance for tailoring the final properties of these materials. Among the complex parameters affecting this process, the hydropho…
View article: Environmentally Friendly Blowing Agents for Producing Polyisocyanurate (PIR) Foams: Study of the Thermal Conductivity Aging and Mechanical Properties
Environmentally Friendly Blowing Agents for Producing Polyisocyanurate (PIR) Foams: Study of the Thermal Conductivity Aging and Mechanical Properties Open
In recent years, increasing concerns about climate change and greenhouse gas emissions have led to a search for alternative blowing agents that allow the avoidance of hazardous hydrofluorocarbons. However, the substitution of these compoun…
View article: Insights on the Influence of the Drying Method and Surface Wettability on the Final Properties of Silica Aerogels
Insights on the Influence of the Drying Method and Surface Wettability on the Final Properties of Silica Aerogels Open
In the synthesis of aerogels, the influence of the drying process on the nanostructure is an issue of utmost relevance for tailoring the final properties of these materials. Among the complex parameters affecting this process, hydrophobici…
View article: Testing of polymeric battery separators using air-coupled, high-frequency and wideband ultrasonic pulses
Testing of polymeric battery separators using air-coupled, high-frequency and wideband ultrasonic pulses Open
Separator membranes are one of the components in batteries and, although being a passive component, they may strongly affect both battery performance and security. Hence, effective control of both its main properties and their variability …
View article: Unraveling the structure-properties correlation in thermal insulating and mechanically stiff PLA aerogels
Unraveling the structure-properties correlation in thermal insulating and mechanically stiff PLA aerogels Open
View article: Enhanced thermal insulation performance of silica aerogel composites through infrared opacifier integration for high-temperature applications
Enhanced thermal insulation performance of silica aerogel composites through infrared opacifier integration for high-temperature applications Open
The inclusion of different fillers in silica aerogels reinforced by a reticulated polyurethane skeleton, allows for the development of a strategy to obtain composites with superior characteristics. Different fillers (TiO2, GO, SiC) and con…
View article: Study of Different Recycling Approaches for Gypsum-Based Composites with Recycled Rubber Aggregates
Study of Different Recycling Approaches for Gypsum-Based Composites with Recycled Rubber Aggregates Open
The worldwide demand for gypsum resources is continuously growing due to its versatility in the building industry. In this context, incorporating recycled aggregates is gaining attention for enhancing the physico-mechanical properties of g…
View article: Reducing Infrared Radiation and Solid Thermal Conductivity by Incorporating Varying Amounts of GnP into Microcellular PMMA
Reducing Infrared Radiation and Solid Thermal Conductivity by Incorporating Varying Amounts of GnP into Microcellular PMMA Open
Although microcellular foams are potential thermal insulators, their low density and small pore size allow infrared radiation to pass through, increasing the effective thermal conductivity. To address this drawback, graphene nanoplatelets …
View article: Studying the Size-Dependence of Graphene Nanoplatelets (GNPs) in the Final Properties of Polyurethane Aerogels: Thermal Insulation and Mechanical Strength
Studying the Size-Dependence of Graphene Nanoplatelets (GNPs) in the Final Properties of Polyurethane Aerogels: Thermal Insulation and Mechanical Strength Open
In the present work, the influence of the addition of graphene nanoplatelets presenting different dimensions on polyurethane–polyisocyanurate aerogel structure and properties has been studied. The obtained aerogels synthesized through a so…
View article: Unraveling the Structure-Properties Correlation in Thermal Insulating and Mechanically Stiff Pla Aerogels
Unraveling the Structure-Properties Correlation in Thermal Insulating and Mechanically Stiff Pla Aerogels Open
View article: Exploring the Performance of Polyurethane Aerogels as Electrochemical Sensors for Lactic Acid Detection: Impact of Structural Characteristics
Exploring the Performance of Polyurethane Aerogels as Electrochemical Sensors for Lactic Acid Detection: Impact of Structural Characteristics Open
View article: Enhanced copper-adsorption removal from water by easy-handling silica aerogel-polyurethane foam composites
Enhanced copper-adsorption removal from water by easy-handling silica aerogel-polyurethane foam composites Open
View article: Towards the Optimization of Polyurethane Aerogel Properties by Densification: Exploring the Structure–Properties Relationship
Towards the Optimization of Polyurethane Aerogel Properties by Densification: Exploring the Structure–Properties Relationship Open
The aerogel performance for industrial uses can be tailored using several chemical and physical strategies. The effects of a controlled densification on polyurethane aerogels are herein studied by analyzing their textural, mechanical, soun…
View article: Trends on Aerogel-Based Biosensors for Medical Applications: An Overview
Trends on Aerogel-Based Biosensors for Medical Applications: An Overview Open
Aerogels are unique solid-state materials composed of interconnected 3D solid networks and a large number of air-filled pores. This structure leads to extended structural characteristics as well as physicochemical properties of the nanosca…
View article: Reaching a near zero radiative heat transfer by the inclusion of modified multiwalled-carbon nanotubes (MWCNTs) in polyurethane-polyisocyanurate aerogels
Reaching a near zero radiative heat transfer by the inclusion of modified multiwalled-carbon nanotubes (MWCNTs) in polyurethane-polyisocyanurate aerogels Open
11 páginas, 10 figuras, 3 tablas
View article: Polyurethane foam scaffold for silica aerogels: effect of cell size on the mechanical properties and thermal insulation
Polyurethane foam scaffold for silica aerogels: effect of cell size on the mechanical properties and thermal insulation Open
Silica-based aerogels have been successfully reinforced by means of reticulated polymeric polyurethane (PU) foams with different cell sizes. The resultant silica aerogel-PU foam composites (Sil-PU composites) were fully characterized (dens…
View article: Super-Insulating Transparent Polyisocyanurate-Polyurethane Aerogels: Analysis of Thermal Conductivity and Mechanical Properties
Super-Insulating Transparent Polyisocyanurate-Polyurethane Aerogels: Analysis of Thermal Conductivity and Mechanical Properties Open
A family of transparent polyisocyanurate-polyurethane (PUR-PIR) aerogels with an interesting combination of physical properties were synthesized. First, their textural properties were analyzed aiming to study catalyst influence on the fina…
View article: Methodology for measuring the thermal conductivity of insulating samples with small dimensions by heat flow meter technique
Methodology for measuring the thermal conductivity of insulating samples with small dimensions by heat flow meter technique Open
Nowadays, developing advanced, highly insulating materials for minimizing heat losses in buildings is of utmost relevance. Thus, there is a constant research activity focused on developing new and enhanced solutions for thermal insulation.…
View article: Improving the Insulating Capacity of Polyurethane Foams through Polyurethane Aerogel Inclusion: From Insulation to Superinsulation
Improving the Insulating Capacity of Polyurethane Foams through Polyurethane Aerogel Inclusion: From Insulation to Superinsulation Open
A novel synthesis of polyurethane foam/polyurethane aerogel (PUF–PUA) composites is presented. Three different polyurethane reticulated foams which present the same density but different pore sizes (named S for small, M for medium, and L f…
View article: Thermal Conductivity of Nanoporous Materials: Where Is the Limit?
Thermal Conductivity of Nanoporous Materials: Where Is the Limit? Open
Nowadays, our society is facing problems related to energy availability. Owing to the energy savings that insulators provide, the search for effective insulating materials is a focus of interest. Since the current insulators do not meet th…
View article: Silica-Based Aerogel Composites Reinforced with Reticulated Polyurethane Foams: Thermal and Mechanical Properties
Silica-Based Aerogel Composites Reinforced with Reticulated Polyurethane Foams: Thermal and Mechanical Properties Open
In this work, silica aerogel composites reinforced with reticulated polyurethane (PU) foams have been manufactured having densities in the range from 117 to 266 kg/m3 and porosities between 85.7 and 92.3%. Two different drying processes we…
View article: Optical Properties of Polyisocyanurate–Polyurethane Aerogels: Study of the Scattering Mechanisms
Optical Properties of Polyisocyanurate–Polyurethane Aerogels: Study of the Scattering Mechanisms Open
Highly transparent polyisocyanurate–polyurethane (PUR–PIR) aerogels were synthesized, and their optical properties were studied in detail. After determining the density and structural parameters of the manufactured materials, we analyzed t…
View article: A New Methodology Based on Cell-Wall Hole Analysis for the Structure-Acoustic Absorption Correlation on Polyurethane Foams
A New Methodology Based on Cell-Wall Hole Analysis for the Structure-Acoustic Absorption Correlation on Polyurethane Foams Open
Polyurethane foams with a hybrid structure between closed cell and open cell were fabricated and fully characterized. Sound absorption measurements were carried out in order to assess their acoustic performance at different frequency range…
View article: Transparent Polyisocyanurate-Polyurethane-Based Aerogels: Key Aspects on the Synthesis and Their Porous Structures
Transparent Polyisocyanurate-Polyurethane-Based Aerogels: Key Aspects on the Synthesis and Their Porous Structures Open
The effect of the catalyst concentration on the synthesis and textural properties of polyisocyanurate-polyurethane aerogels is analyzed. The use of different catalyst amounts allows obtaining low-density aerogels (0.10–0.16 g/cm3) with hig…
View article: Nanoparticles Addition in PU Foams: The Dramatic Effect of Trapped-Air on Nucleation
Nanoparticles Addition in PU Foams: The Dramatic Effect of Trapped-Air on Nucleation Open
To determine the effect of nanoclays and trapped air on the formation of rigid polyurethane foams, three different production procedures were used. To study the influence of mixing at atmospheric pressure, two approaches were carried out e…
View article: CCDC 1971287: Experimental Crystal Structure Determination
CCDC 1971287: Experimental Crystal Structure Determination Open
View article: Luminescent Rhenium(I)tricarbonyl Complexes Containing Different Pyrazoles and Their Successive Deprotonation Products: CO<sub>2</sub> Reduction Electrocatalysts
Luminescent Rhenium(I)tricarbonyl Complexes Containing Different Pyrazoles and Their Successive Deprotonation Products: CO<sub>2</sub> Reduction Electrocatalysts Open
Cationic fac-[Re(CO)3(pz*H)(pypzH)]OTf (pz*H = pyrazole, pzH; 3,5-dimethylpyrazole, dmpzH; indazole, indzH; 3-(2-pyridyl)pyrazole, pypzH) were obtained from fac-[ReBr(CO)3(pypzH)] by halide abstraction w…
View article: CCDC 1971288: Experimental Crystal Structure Determination
CCDC 1971288: Experimental Crystal Structure Determination Open
View article: CCDC 1971286: Experimental Crystal Structure Determination
CCDC 1971286: Experimental Crystal Structure Determination Open
View article: Enhanced nitrates-polluted water remediation by polyurethane/sepiolite cellular nanocomposites
Enhanced nitrates-polluted water remediation by polyurethane/sepiolite cellular nanocomposites Open
Nanocomposite hydrophilic flexible polyurethane foams were prepared by in situ polymerization using an organomodified sepiolite as filler. The sepiolite affinity by nitrates dissolved in water was increased by treating them with quaternary…