Buscar
Sheets of branched poly(lactic acid) obtained by one step reactive extrusion calendering process: Melt rheology analysis
(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 ...
Effect of the Strain Rate and Drawing Temperature on the Mechanical Behavior of EVOH and EVOH Composites
(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 ...
Fracture behaviour of poly[ethylene–(vinyl alcohol)]/organo-clay composites
(WileySociety of Chemical Industry, 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 ...
Effect of the recycling and annealing on the mechanical and fracture properties of poly(lactic acid)
(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 ...
The Essential Work of Fracture (EWF) method – Analyzing the Post-Yielding Fracture Mechanics of polymers
(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 ...
Effect of the unidirectional drawing on the thermal and mechanical properties of PLA films with different L-isomer content
(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
(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 ...
Procesado del ácido poliláctico (PLA) y de nanocompuestos PLA/montmorillonita en planta piloto: Estudio de sus cambios estructurales y de su estabilidad térmica
(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 ...
Influence of crystallinity on the fracture toughness of poly(lactic acid)/montmorillonite nanocomposites prepared by twin-screw extrusion.
(© 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 ...
Aplicación de la mecánica de la fractura post-cedencia a polímeros
(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 ...