Browsing by Subject "Termoplàstics"
Now showing items 21-40 of 77
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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. ... -
Estudi d'un capçal d'impressió 3D per pèl·lets
(Universitat Politècnica de Catalunya, 2023-07-21)
Bachelor thesis
Open AccessEn l'actualitat, l'ús d'impressores 3D al sector industrial està augmentant exponencialment, en conseqüència, la demanda de material verge també ho fa, essent aquest majoritàriament plàstic i generant deixalles plàstiques ... -
Estudi de la degradació del Poli(carbonat de propilè)
(Universitat Politècnica de Catalunya, 2013-05)
Master thesis (pre-Bologna period)
Open AccessEn el mon actual, amb la dependència dels combustibles fòssils i a l'hora amb el seu imminent esgotament, cal indagar en la producció de polímers amb fonts alternatives de carboni. A demés, si una de les fonts és la ... -
Estudio de la influencia de nanopartículas laminares en el comportamiento mecánico, térmico y al fuego de espumas ignífugas de Acrilonitrilo-Butadieno-Estireno (ABS)
(Universitat Politècnica de Catalunya, 2017-09)
Master thesis
Restricted access - author's decisionPreparar espumas rígidas ignífugas de ABS (copolímero de acrilonitrilo-butadieno-estireno) y analizar el efecto de la presencia de diferentes nanopartículas laminares en la morfología y propiedades frente al fuego de las espumas. -
Estudio de las propiedades mecánicas, térmicas y de comportamiento al fuego de aerogeles polímero/arcilla
(Universitat Politècnica de Catalunya, 2011-09)
Master thesis
Restricted access - author's decisionLas espumas poliméricas son unos materiales de gran interés industrial debido a su versatilidad en cuanto a propiedades y a su elevada ligereza. Así por ejemplo encontramos las espumas de poliestireno, poliuretano, etc. ... -
Estudio de preparación y caracterización térmica y al fuego de formulaciones ignifugadas de ABS
(Universitat Politècnica de Catalunya, 2016-02)
Master thesis
Restricted access - author's decisionDurante las últimas décadas, el uso de materiales poliméricos en la vida cotidiana ha aumentado sustancialmente por su óptimo balance de propiedades mecánicas, térmicas y físicas. En particular, el ABS (copolímero de ... -
Estudio del diseño low-cost de un analizador de termoplásticos basado en la espectroescopia
(Universitat Politècnica de Catalunya, 2019-06-10)
Bachelor thesis
Open AccessEste trabajo de final de grado ha sido realizado con el objetivo de localizar la opción más óptima utilizando espectroscopia para poder distinguir los diferentes materiales plásticos obtenidos como residuos, y así, poder ... -
Evaluacion del comportamiento térmico, mecanico y a la fractura de laminas de mezclas de R-PET/poliolefinas
(Universitat Politècnica de Catalunya, 2010-02)
Master thesis (pre-Bologna period)
Open AccessEl objetivo de este proyecto ha sido la preparación y caracterización térmica, mecánica y a fractura de mezclas de Poli(Etilén tereftalato) reciclado (R-PET) con un 10 % en peso de dos tipos de Polietilenos (alta (HDPE) ... -
Evaluation of different mediator-modified screen-printed electrodes used in a flow system as amperometric sensors for NADH
(2007-03-30)
Article
Restricted access - publisher's policyThis work presents a comparative study between two different methods for the preparation of mediator-modified screen-printed electrodes, to be used as detectors in a reliable flow injection system for the determination ... -
Evaluation of the influence of the addition of biodegradable polymer matrices in the formulation of self-curing polymer systems for biomedical purposes
(2009-10)
Article
Restricted access - publisher's policyThe solid phase of self-curing formulations of poly(methyl methacrylate) was modified by different biodegradable polymer matrices, such as poly(L-lactic acid), poly(b-hydroxybutyrate) and thermoplastic starches (TPSs). ... -
Fast fabrication of reusable polyethersulfone microbial biosensors through biocompatible phase separation
(2019-07-29)
Article
Open AccessIn biosensors fabrication, entrapment in polymeric matrices allows efficient immobilization of the biorecognition elements without compromising their structure and activity. When considering living cells, the biocompatibility ... -
Fractura de mezclas de policarbonato con acrilonitrilo-butadieno-estireno
(Universitat Politècnica de Catalunya, 1997-05-22)
Doctoral thesis
Open Access -
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 toughness of polypropylene-based particulate composites
(Molecular Diversity Preservation International, 2009-11-30)
Article
Open AccessThe fracture behaviour of polymers is strongly affected by the addition of rigid particles. Several features of the particles have a decisive influence on the values of the fracture toughness: shape and size, chemical ... -
GTR/Thermoplastics blends: how do interfacial interactions govern processing and physico-mechanical properties?
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-01-22)
Article
Open AccessIn this work, GTR/thermoplastics blends (in ratio 50/50 and 75/25 wt.%) were prepared by melt-compounding in an internal mixer. During research, trans-polyoctenamer rubber (TOR), ethylene-vinyl acetate copolymer (EVA), ... -
Heat transfer in polypropylene-based foams produced using different foaming processes
(Wiley, 2009-10)
Article
Restricted access - publisher's policyThis paper presents the characterization of the cellular structure and thermal conduction behaviour of polypropylene foams produced using different foaming processes, with the aim of selecting the best possible PP foam ... -
Heat transfer in shrink films
(Universitat Politècnica de Catalunya, 2015-01)
Bachelor thesis
Restricted access - author's decisionPolyethylene is a thermoplastic polymer composed of a repeating unit (-CH2-CH2)n. It is the most consumed plastic due to its low price and ease of manufacture. It can be described by three basic characteristics that influence ... -
Immiscible polymer blends: relationships between processing conditions, morphology, and mechanical properties
(Universitat Politècnica de Catalunya, 2023-10-26)
Master thesis
Restricted access - confidentiality agreement
Covenantee: Montanuniversität LeobenThe aim of this research is (i) the generation of different microstructures in polyethylene (PE)/ polyamide (PA) and polyethylene (PE)/ polylactic acid (PLA) immiscible polymer blends using the extrusion technique, by ... -
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 the notch-sharpening technique on styrene-acrylonitrile fracture behavior
(2016-08-20)
Article
Open AccessThe Centre Catala del Plastic and Universidad Rey Juan Carlos laboratories joined forces to investigate the effect of the notch-sharpening technique on the fracture parameters of styrene-acrylonitrile. Contact notch-sharpening ...
