Browsing by Author "Santana Pérez, Orlando Onofre"
Now showing items 21-40 of 66
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Effect of the unidirectional drawing on the thermal and mechanical properties of PLA films with different L -isomer content
(2013-02-15)
Article
Restricted access - publisher's policyThis 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 ... -
Effect of the viscosity ratio on the PLA/PA10.10 bioblends morphology and mechanical properties
(2018-01-30)
Article
Open AccessPLA bio-blends with a predominantly biosourced PA10.10 in the composition range 10-50wt.% were prepared by melt blending in order to overcome the advanced brittleness of PLA. Due to the inherent immiscibility of the blends, ... -
Enhanced general analytical equation for the kinetics of the thermal degradation of poly(lactic acid) driven by random scission
(2013-08)
Article
Restricted access - publisher's policyAn enhanced general analytical equation has been developed in order to evaluate the kinetic parameters of the thermal degradation of poly(lactic acid) (PLA) at various linear heating rates and at constant rate conditions. ... -
Enhanced general analytical equation for the kinetics of the thermal degradation of poly(lactic acid)/montmorillonite nanocomposites driven by random scission
(2014-03)
Article
Restricted access - publisher's policyAn enhanced general analytical equation has been developed in order to evaluate the kinetic parameters of the thermal degradation of nanocomposites, composed of poly(lactic acid) (PLA) and organo-modified montmorillonite ... -
Essential work of fracture of poly(lactic acid) modified by reactive extrusion
(2012)
Conference report
Open AccessEn este trabajo se han evluado las variaciones en el comportamiento mecánico y a fractura de láminas de 1 mm de espesor de dos grados de P LA con contenidos diferentes de enantiómero D (2 y 4.5 % mol), procesadas mediante ... -
ESTRUCTURA I CARACTERITZACIÓ DELS MATERIALS (3r quadrimestre)
(Universitat Politècnica de Catalunya, 2014-06-30)
Exam
Restricted access to the UPC academic community -
Evaluation of the mechanical properties of Poly(Lactic) Acid/ABS Bio-Blend foams
(Springer, 2020-05-30)
Part of book or chapter of book
Restricted access - publisher's policyFoaming is a powerful method that allows lightening of products and reducing the amount of material used. Poly(lactic) acid (PLA) is considered a promising thermoplastic for the replacement of traditional non-biodegradable ... -
Fractura de láminas extruidas a partir de PET opaco reciclado
(2018)
Conference report
Restricted access - publisher's policyEl presente trabajo se engloba dentro de las acciones prevista en el proyecto “Revalorización de PET opaco reciclado en materiales innovadores (RevalPET)” financiado por los fondos FEDER a través del programa INTERREG V ... -
Fractura de mezclas de policarbonato con acrilonitrilo-butadieno-estireno
(Universitat Politècnica de Catalunya, 1997-05-22)
Doctoral thesis
Open Access -
Fractura postcedencia de polímeros
(2011)
Conference report
Open Access -
Fracture behavior of quenched poly(lactic acid)
(2011-01)
Article
Restricted access - publisher's policyThe 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 de-aged poly(lactic acid) assessed by essential work of fracture and J-Integral methods
(2010-12)
Article
Restricted access - publisher's policyThe applicability of the essential work of fracture (EWF) in SENB geometry as an alternative to the J-integral methodology has been assessed. An amorphous poly(lactic acid) (PLA) with ductile behaviour promoted by a de-ageing ... -
Fracture behaviour of poly[ethylene–(vinyl alcohol)]/organo-clay composites
(2009-04-14)
Article
Restricted access - publisher's policyBACKGROUND: 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 ... -
Halogen-free flame retardant polyolefin foams
(2012)
Conference report
Restricted access - publisher's policyThe present work deals with the preparation and characterizacion of an improved fire-resistant ethylene-acrylate foamed material containing calcium carbonate and a silicon elastomer. This grade, usually employed on the ... -
Influence of crystallinity on the fracture toughness of poly(lactic acid)/montmorillonite nanocomposites prepared by twin-screw extrusion
(2011-04-15)
Article
Restricted access - publisher's policyThe 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 processing on the ethylene-vinyl alcohol (EVOH) properties: Application of the successive self-nucleation and annealing (SSA) technique
(2010-03)
Article
Restricted access - publisher's policyFilms 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 ... -
Kinetics of the thermal decomposition of processed poly(lactic acid)
(2010-12)
Article
Restricted access - publisher's policyThe kinetics of the thermal decomposition of processed poly(lactic acid) has been studied and compared to that of raw material. Processing consisted of two different industrial processes: 1) Injection (with or without ... -
Mejora de la estabilidad térmica del ácido poliláctico mediante dispersión de nanoarcillas modificadas
(Asociación Española de Materiales Compuestos, 2015)
Conference report
Open Access -
Melt-processing of cellulose nanofibril/polylactide bionanocomposites via a sustainable polyethylene glycol-based carrier system
(2019-08-10)
Article
Open AccessConsidering the appealing need for an industrially viable approach, this works aims at demonstrating the rapid and easy melt processing of Polylactide (PLA) bio-composites reinforced with cellulose nanofibrils (CNF). For ...
