A5071359111- biodegradable polymer synthesis and properties
- Lignin and Wood Chemistry
- Flame retardant materials and properties
- Corrosion Behavior and Inhibition
- Polymer composites and self-healing
- Hydrogen embrittlement and corrosion behaviors in metals
- Bone Tissue Engineering Materials
- Additive Manufacturing and 3D Printing Technologies
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Nanocomposite Films for Food Packaging
- Antimicrobial agents and applications
- Advanced Sensor and Energy Harvesting Materials
- Dental materials and restorations
- Bacterial biofilms and quorum sensing
- High Temperature Alloys and Creep
- Polymer Nanocomposites and Properties
- Marine Biology and Environmental Chemistry
- Concrete Corrosion and Durability
- Fire dynamics and safety research
- Natural Fiber Reinforced Composites
- Advanced Photocatalysis Techniques
- Microstructure and Mechanical Properties of Steels
- Metal and Thin Film Mechanics
- Comparative International Legal Studies
Universidad de La Frontera
2013-2025
University of Córdoba
2022-2025
University of Concepción
2015-2023
Universidad Tecnológica de Bolívar
2022
This article focuses on a systematic study of Ti-6Al-4V alloy in order to extensively characterize the main mechanical properties at macro-, micro- and submicrometric length scale under different stress fields. Hardness, elastic modulus, true stress–strain curves strain-hardening exponent are correlated with intrinsic α- β-phases that constitute this alloy. A characterization process followed, considering anisotropic effect both orthogonal crystallographic directions, as well determining for...
An exergy analysis of maize cob gasification in a concentric tube fixed-bed reactor was conducted to define the relationship between biomass combustion and zones. Biomass estimated based on its elemental composition, syngas treated as an ideal gas. The results show linear correlation temperature mass ratio both optimum efficiency 68.2% at 2. Most irreversibilities were found zone, with 42.9 kJ/kg destroyed, compared 33.7 zone. It is concluded that allothermal two-zone gasifiers tubes...
antiago de Cali es una ciudad reconocida como distrito especial deportivo, lo anterior por su vocación deportiva, dentro se encuentra la gran afición al deporte del futbol los habitantes esta, identificando dos grandes equipos futbol, el América y deportivo Cali, sumado a no puede desligar anteriores marketing gestión sus marcas, siendo necesidad compartir aspectos ligados las mismas valores que desean transmitir con hinchada o aficionados. Por este proyecto tuvo objetivo general identificar...
Nanocomposites and a composite based on poly(butylene adipate-co-terephthalate) (PBAT) were synthesized using commercial copper nanoparticles (Cu-NPs), copper/cuprous oxide (Cu|Cu2O-NPs), sulfate (CuSO4), respectively. The Cu|Cu2O-NPs chemical reduction characterized by X-ray diffraction (XRD) transmission electron microscopy (TEM). synthesis of yielded mixture Cu Cu2O, with metal having spherical morphology approximately 40 nm in diameter Cu2O 150 nm. To prepare the nanocomposites (NCs)...
Poly(butylene adipate‐ co ‐terephthalate) (PBAT) was mixed with copper nanoparticles (Cu‐NPs) in concentrations of 1%, 3%, and 5% particle size between 100 nm 200 by the melting method. A morphological, thermal, structural characterization nanocomposites (NCs‐PBAT/Cu) performed to analyze effect Cu‐NPs on polymer chains, as well explain influence their crystallinity, its thermomechanical antibacterial properties. The percentage crystallinity (X c ) increased 6.7% 9.5% amount matrix....
Antifouling coatings containing biocidal agents can be used to prevent the accumulation of biotic deposits on submerged surfaces; however, several commercial biocides negatively affect ecosystem. In this study, various formulations a potential biocide product comprising copper nanoparticles and capsaicin supported zeolite ZSM-5 were analyzed determine influence concentration each component. The incorporation was evidenced by scanning electron microscopy energy dispersive spectroscopy....
The effect of microencapsulation dihydrogen ammonium phosphate (MAP) in the generation fire-resistant coatings was studied presence tannins extracted from Pinus radiata. MAP encapsulated to avoid interaction with sodium carbonate (Na2CO3), which, upon contact fire, generates unwanted gases. Thus, a fireproof (or intumescent) protective film produced tannins. Microcapsules were polymerized melamine and characterized by Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis...
The nanoindentation‐induced mechanical deformation response is applied to identify the orthotropic elastic moduli using Delafargue and Ulm method as well validate asymmetric CPB06 nonlinear plasticity model required in simulations of nonuniform macroscopic Ti–6Al–4V alloy. Scanning electron microscope (SEM) technique allows select maximum penetration depth for indentation deformed alpha phase alpha–beta interphase, α / β , respectively. apparent macromechanical can be successfully derived...
Abstract The global demand for products manufactured with carbon fibers (CFs) has increased in recent years; however, the waste generated at end of product lifetime also increased. In this research, impact addition nanotubes (CNTs) on interlaminated resistance recycled (RCFs) was studied. work, a recycling process composite material applied via thermolysis to obtain CFs, followed by growth CNTs their surface using Poptube technique. temperature were 500 °C and 700 °C; ferrocene polypyrrole...
The dielectric properties of ceramic-polymer composites were investigated using different lead-free ferroelectrics, 0.50[Ba(Zr0.2Ti0.8)O3]–0.50(Ba0.7Ca0.3)TiO3 (BZT-BCT) and 0.96(K0.48Na0.52)(Nb0.95Sb0.05)O3–0.04Bi0.5(Na0.82K0.18)0.5ZrO3 (KNNS-BNKZ), as fillers to fabricate poly(vinylidene fluoride) (PVDF) the matrix. prepared at x = 35, 45, 50, 65 wt% according formulas x(BZT-BCT)–(1-x)PVDF xKNNS-BNKZ–(1-x)PVDF by applying melt mixing a torque rheometer hot-pressing process. distribution...
The effect of B and W in the precipitation kinetic M23C6 carbides martensitic/ferritic steels were studied assisted by ThermoCalc TC-PRISMA. simulation predicts that has low solubility austenitic ferritic matrix, thus promoting formation M2B borides (Cr, Fe)23(C, B)6 carbides. Furthermore, calculation carried out shown are stable even at austenization temperature (1100 °C). This suggests precipitates first, hence consuming most available B. Additionally, kinetics Fe)23C6, Fe, W)23C6...
Abstract This study aimed to enhance compatibility and thermal stability between thermoplastic starch (TPS) polylactic acid (PLA) by incorporating citric acid-grafted (CA–Starch) at different concentrations (1 5%) with varying degrees of substitution for derived from sweet potatoes yams (DY). Blends were produced using a constant TPS/PLA weight ratio 60:40, both without compatibilizer. The blending process was carried out torque rheometer under two distinct conditions. results exhibited...
Biocorrosion of materials used in dental restorations is a complex process involving various bacterial species that coexist as biofilms. Since copper possesses excellent antibacterial properties, it could help minimize this problem. The aim study to assess the antibiofilm characteristics and corrosion resistance CoCr copper-coated alloys multispecies biofilm model. coated with (CoCr/Cu) using Physical Vapor Deposition (PVD) were investigated. samples incubated media without for 24 h 15 days....
BiOBr microspheres with hierarchical morphologies (BiOBr-MicSphe) has potential application in heterogeneous photocatalysis for decontamination of water and air. For this reason, the synthesis, characterization an evaluation photocatalytic activity these materials become important. In article, BiOBr-MicSphe were synthesized using different ranges reaction temperature (120-200 °C) time (12 h - 24 h). Samples grown at 145 °C 18 showed higher on gallic acid degradation. Morphological...