Visualitza Departament: Enginyeria de Sistemes Industrials i Disseny per autoria "289daca0-9301-4041-b2b4-36ef5f30b5bc"
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Aplicación de la mecánica de la fractura post-cedencia a polímeros
Maspoch, Maria Lluïsa; Franco Urquiza, Edgar A.; Gamez-Perez, Jose; Sánchez Soto, Miguel; Velasco, José Ignacio; Santana Pérez, Orlando Onofre; Martínez Benazat, Antonio Universidad Simón Bolívar (2010)The Essential Work of Fracture (EWF) technique has been used for the ductile materials characterization, where yielding phenomenon occurs before crack propagation. The EWF method characterizes the post-yielding ... -
Effect of the recycling and annealing on the mechanical and fracture properties of poly(lactic acid)
Nascimento, Lori Miller; Gamez-Perez, Jose; Santana Pérez, Orlando Onofre; Velasco, José Ignacio; Maspoch, Maria Lluïsa; Franco Urquiza, Edgar A. Springer US (2010)The aim of this work is to evaluate the use of Poly(lactic acid) (PLA) industrial waste as a source of raw material for certain applications, as well as to understand the effects of the annealing on the fracture behavior ... -
Effect of the Strain Rate and Drawing Temperature on the Mechanical Behavior of EVOH and EVOH Composites
Franco Urquiza, Edgar A.; Gamez-Perez, Jose; Velázquez Infante, Julio César; Santana Pérez, Orlando Onofre; Martínez Benazat, Antonio; Maspoch, Maria Lluïsa Wiley (2013-03)The effect of the strain rate and draw temperature on the mechanical behavior of ethylene vinyl alcohol (EVOH) and EVOH composites was analyzed. When EVOH is stretched at moderate strain rates, evidence of strain-induced ... -
Effect of the unidirectional drawing on the thermal and mechanical properties of PLA films with different L-isomer content
Velázquez Infante, Julio César; Gamez-Perez, Jose; Franco Urquiza, Edgar A.; Santana Pérez, Orlando Onofre; Carrasco, Félix; Maspoch, Maria Lluïsa Wiley Periodicals, Inc. (2013-02)This work simulates the thermoforming process of two different L-isomer content PLA grades (95.6 and 98%), studying the influence on the induced morphology and the variation in the thermal and tensile properties. The ... -
Estudio de la relación estructura-propiedades-procesamiento de nanocompuestos basados en poli (ácido láctico) (PLA) y o-MMT
Gamez-Perez, Jose; Velázquez Infante, Julio César; Franco Urquiza, Edgar A.; Santana Pérez, Orlando Onofre; Maspoch, Maria Lluïsa; Bárcenas-Martínez, Sandra Universidad de Oriente (2014)En este trabajo se investiga la influencia del procesado y del contenido de nanoarcilla en las propiedades mecánicas de láminas obtenidas por extrusión-calandra a partir de un grado comercial de PLA y una nanoarcilla ... -
Fracture behavior of quenched poly(lactic acid)
Gamez-Perez, Jose; Velázquez Infante, Julio César; Franco Urquiza, Edgar A.; Pagès, Pere; Carrasco, Félix; Santana Pérez, Orlando Onofre; Maspoch, Maria Lluïsa BME-PT (2011)The effect of a quenching treatment applied on heated cast sheet extruded films of two poly(lactic acid) (PLA) commercial grades, with different optical purities, was studied. The thermal and mechanical properties of the ... -
Fracture behaviour of poly[ethylene–(vinyl alcohol)]/organo-clay composites
Maspoch, Maria Lluïsa; Franco Urquiza, Edgar A.; Gamez-Perez, Jose; Santana Pérez, Orlando Onofre; Sánchez Soto, Miguel Wiley (2009)BACKGROUND: Ethylene–(vinyl alcohol) (EVOH) copolymer/organo‐modified montmorillonite (OMMT) composites were investigated. Composites with two different percentages by weight of OMMT were prepared using a melt‐extrusion ... -
Influence of crystallinity on the fracture toughness of poly(lactic acid)/montmorillonite nanocomposites prepared by twin-screw extrusion.
Gamez-Perez, Jose; Nascimento, Lori Miller; Bou, J. J.; Franco Urquiza, Edgar A.; Santana Pérez, Orlando Onofre; Carrasco, Félix; Maspoch, Maria Lluïsa © 2010 Wiley Periodicals (2011-04)The aim of this work was to study the effect of crystallinity degree on the thermal, mechanical, and fracture properties of poly(lactic acid)/organomodified montmorillonite (PLA/OMMT) nanocomposites. Samples with two ... -
Influence of femtolaser notch sharpening technique in the determination of essential work of fracture (EWF) parameters
Martínez, A. B.; Segovia, A.; Gamez-Perez, Jose; Maspoch, Maria Lluïsa Elsevier (2009-06)The fracture behaviour of a 0.5 mm thick ethylene-propylene block copolymer is analyzed using the essential work of fracture method, using DENT-type specimens. The influence of three experimental parameters in the technique ... -
Influence of processing on the ethylene-vinyl alcohol (EVOH) properties: Application of the successive self-nucleation and annealing (SSA) technique
Franco Urquiza, Edgar A.; Santana Pérez, Orlando Onofre; Gamez-Perez, Jose; Martínez, A. B.; Maspoch, Maria Lluïsa Budapest University of Technology (2010)Films of EVOH copolymers, processed three times by twin-screw extrusion were prepared using a cast-film line. The variation on the melt flow rate (MFR) and rheological behaviour of the films were determined, as well as the ... -
Procesado del ácido poliláctico (PLA) y de nanocompuestos PLA/montmorillonita en planta piloto: Estudio de sus cambios estructurales y de su estabilidad térmica
Pagès, Pere; Carrasco, Félix; Gamez-Perez, Jose; Santana Pérez, Orlando Onofre; Maspoch, Maria Lluïsa Asociación de Químicos e Ingenieros del Instituto Químico de Sarrià (2010)Se aplican procesos de transformación y tratamiento de termoplásticos (inyección, extrusión-inyección y recocido) al ácido poliláctico (PLA) y a determinados nanocompues- tos PLA/montmorillonita, con objeto de estudiar las ... -
Processing of poly(lactic acid)/organomontmorillonite nanocomposites: microstructure, thermal stability and kinetics of the thermal decomposition
Carrasco, Félix; Gamez-Perez, Jose; Santana Pérez, Orlando Onofre; Maspoch, Maria Lluïsa Elsevier (2011-12-15)The degradation during the melt processing of poly(lactic acid) (PLA) and its nanocomposites with different contents (0.5 and 2.5%) of an organomodified montmorillonite (OMMT) promoted physical and chemical changes in their ... -
Sheets of branched poly(lactic acid) obtained by one step reactive extrusion calendering process: Melt rheology analysis
Cailloux, J.; Santana Pérez, Orlando Onofre; Franco Urquiza, Edgar A.; Bou, J. J.; Carrasco, Félix; Gamez-Perez, Jose; Maspoch, Maria Lluïsa Budapest University of Technology and Economics Department of Polymer Engineering (2013)One-step reactive extrusion-calendering process (REX-Calendering) was used in order to obtain sheets of 1mm from two PD,L-LA extrusion grades modified with a styrene-acrylic multifunctional oligomeric agent. In a preliminary ... -
The Essential Work of Fracture (EWF) method – Analyzing the Post-Yielding Fracture Mechanics of polymers
Martínez, A. B.; Gamez-Perez, Jose; Sánchez Soto, Miguel; Velasco, José Ignacio; Santana Pérez, Orlando Onofre; Maspoch, Maria Lluïsa Elsevier (2009-12)The Post-Yielding Fracture Mechanics describe the fracture behaviour of pre-cracked films and thin sheets that show yielding phenomenon at the crack tip during fracture. The Essential Work of Fracture method (EWF) has been ...