Universidad de Concepción Facultad de Ingeniería

PERSONAL

Medina Muñoz Carlos Andrés

Información de Contacto

  • 56 41 220 3549
  • Oficina 336 Edificio Central Facultad de Ingeniería

Sobre Medina Muñoz Carlos Andrés

Ingeniero Civil Aeroespacial - UDEC

Doctor en Ciencias e Ingeniería de Materiales, UDEC.

Proyectos

2014 PAI 781411004

Prof. Carlos Medina (Personal Técnico de Apoyo)
Desarrollo de Nanomateriales biodegradables activos para su potencial uso en la elaboración de envases de
alimentos termoformados

2013 Innova BIOBIO

Prof. Carlos Medina (Director)
Turbina urbana de eje vertical para la generación de energía eléctrica

2013 Fondef VIUR120004

Prof. Carlos Medina (Director)
Turbina Eólica Urbana de Alto Rendimiento

2013 Fondecyt 1120002

Prof. Carlos Medina (Personal Técnico de Apoyo)
Improvement of the Working Life of Steel Grinding Balls by Optimizing their Hardness and their Tenacity

2012 Fondef CA12 10308

Prof. Carlos Medina (Investigador Principal)
Prof. Paulo Flores (Subdirector)
Diseño y desarrollo de un prototipo integrado para la síntesis masiva de nanoestructuras: aplicaciones en nanocompuestos

2012 Fondecyt 11110347

Prof. Carlos Medina (Personal Técnico de Apoyo)
Development of Processing and Characterization of a Shape Memory Hybrid Alloy Based on Functionalized Nanowires and Polylactic Acid: A Novel Material for Biocompatible Implantes

2010 Fondef D08I1144

Prof. Paulo Flores (Investigador)
Prof. Carlos Medina (Personal Técnico de Apoyo)
Desarrollo y manufactura de turbinas eólicas de alta eficiencia a bajas velocidades de viento
(Link Conicyt)

2010 Fondef D08I1138

Prof. Paulo Flores (Director)
Prof. Carlos Medina (Tesista)
Desarrollo de polímeros termoestables reforzados con fibras y nanopartículas para aplicaciones de alto desempeño
(Link Conicyt)

Publicaciones

Correlation between mechanical and microstructural properties of vulcanized polyisoprene, polychloroprene, and nitrile-butadiene rubber subjected to accelerated thermal aging (2018), he purpose of this work was to correlate the effects of thermal aging on the macroscopic properties and microstructural changes for three vulcanized rubber types. The materials were subjected to accelerated thermal aging for periods between 0 and 168 h at 100°C. This aging was evaluated by investigating the mechanical properties and by Fourier transform infrared (FTIR) and Raman analysis. The results showed that subjecting the materials to thermal aging for a longer time decreased the elongation at break and tear strength and increased the hardness, while tensile strength exhibited different behavior and followed a different trend. The spectroscopy analyses indicated that there is a decrease in the amount of C=C present in the polymer as the aging time increased, which could be identified by the decrease in peak intensity at 1537 and 1600 cm−1 in the FTIR and Raman spectrum, respectively. These results were attributed mainly to an increase in cross-link density, which caused degradation of the material, essentially by a loss of ductility. A good linear relation (R2 approximately 0.95) between changes in the intensity of FTIR peaks for the C=C signal and changes in elongation at break and hardness was found, concluding that these are good indicators of degradation in elastomers. https://doi.org/10.1177/0095244318798171

The Journal of Prosthetic Dentistry 119 (5), pp. 862.e1 - 862.e7, 2018 (2018), The effect of molecular weights and hydrolysis degrees (HD) of polyvinyl alcohol (PVA) on thermal and mechanical properties and crystallinity of polylactic acid (PLA)/PVA blends was investigated. Blends were prepared by the melt blending method using PLA/PVA ratios: 80/20, 90/10 and 97/3 wt. %. A single glass transition temperatures was observed for all PLA/PVA blends, suggesting the formation of binary compatible blends at concentration range studied. Thermogravimetric analysis results showed a better thermal stability for PLA/PVA blends containing PVA of higher Mw and HD. According to mechanical properties, low quantities of PVA (3 wt. %) do not affect the tensile strength of blends (irrespective of Mw and HD). However, as the PVA content increases, tensile strength tends to lower values, especially for blends with 20 wt.% of PVA, with 98% of HD. Keywords: material testing; melt blending; polylactic acid; polyvinyl alcohol; polymer blend http://dx.doi.org/10.1590/0104-1428.03117

Multiscale characterization of nano-engineered fiber-reinforced composites: Effect of carbon nanotubes on the out-of-plane mechanical behavior (2017), Journal of Nanomaterials, 2017 (2017), 1-9

Estimation of the surface interaction mechanism of ZnO nanoparticles modified with organosilane groups by Raman Spectroscopy. (2017), https://doi.org/10.1016/j.ceramint.2017.06.027

Synthesis of Copper Nanowires and Their Antimicrobial Activity on Strains Isolated Persistent Endodontic Infections. (2017), .

Effect of ZnO nanoparticles obtained by arc discharge on thermo-mechanical properties of matrix thermoset nanocomposites (2016), Journal of Applied Polymer Science, 2016

Comparison of push-in and push-out tests for measuring interfacial shear strength in nano-reinforced composite materials (2015), Journal of Composites Materials, 2015, in press

Quality and high yield synthesis of Ag nanowires by microwave-assisted hydrothermal method (2015), Nanoscale Research Letters, 2015, pp. 10-48

Influence of aramid fibers on the mechanical behavior of a hybrid carbon-aramid-reinforced epoxy composite (2015), Journal of Materials: Design and Applications, 2015

The influence of carbon fabric weave on the in-plane shear mechanical performance of epoxy fiber-reinforced laminates (2014), Journal of Composites Materials, Volume 48 (23), 2014, pp. 2871-2878

The effect of multiwall carbon nanotubes on the in-plane shear behavior of epoxy glass fiber reinforced composites (2013), Composites: PartB, Volume 55, 2013, pp. 421-425

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