Exploració per tema "Copolímers de bloc"
Ara es mostren els items 1-9 de 9
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Block and graft copolymers made of 16-membered macrolactones and l-Alanine: a comparative study
(2019-08-01)
Article
Accés obertBlock and graft poly(macrolactone)-poly(a-amino acid) copolymers made of l-alanine and pentadecalactone or globalide respectively, are prepared. A sequential ring-opening polymerization (ROP) copolymerization route consisting ... -
Essential work of fracture analysis of the tearing of a ductile polymer film
(2010-09)
Article
Accés restringit per política de l'editorialThe fracture behaviour of a 0.5 mm thick ethylene-propylene block copolymer, previously evaluated using the essential work of fracture method, has been analyzed again in more detail, using different plots, allowing the ... -
Fractura a velocidades de impacto en distintos grados de copolímeros de propileno-etileno
(2009-03-25)
Comunicació de congrés
Accés obertSe han inyectado probetas de 9 mm de espesor de dos copolímeros de propileno-etileno. A estos espesores estos copolímeros cumplen los requisitos de la LEFM. Se ha determinado KIC en un equipo de impacto pendular y se ... -
Influence of the injection moulding parameters on the cellular structure and thermo mechanical properties of ethylene-propylene block copolymer and PETG foams
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialMicrocellular injection moulding technology is capable of producing lightweight polymeric products. Microcellular foams are characterised by cell densities in the order of 109-1015 cells per cm3 and cell sizes between 10-100 ... -
Influence of the injection-molding parameters on the cellular structure and thermo-mechanical properties of ethylene-propylene block copolymer foams
(2013-03)
Article
Accés restringit per política de l'editorialMicrocellular injection-molding technology is capable of producing lightweight polymeric products. The foam morphology is determined by the injection-molding parameters, and it has been observed that depending on the ... -
Porous membranes based on polypropylene-ethylene copolymers. Influence of temperature on extrusion, annealing and uniaxial strain stages
(Multidisciplinary Digital Publishing Institute (MDPI), 2018-08-02)
Article
Accés obertIn this study, block and random copolymers of polypropylene–ethylene are selected to prepare porous membranes through the melt extrusion-annealing-uniaxial stretching technique (MEAUS), at a constant draw ratio. In some ... -
PS-b-P4VP block copolymer micelles as a soft template to grow openly porous nickel films for alkaline hydrogen evolution
(2023-11)
Article
Accés obertHighly porous Ni films have been potentiostatically synthesised by micelle-assisted electrodeposition using custom-made PS-b-P4VP block copolymer micelles as a soft template. Two PS-b-P4VP block copolymers with PS/P4VP ... -
Relación estructura-propieddes en placas y láminas de polipropileno y copolímeros en bloque etileno-propileno obtenidas por diferentes procesos de transformación.
(Universitat Politècnica de Catalunya, 2006-07-07)
Tesi
Accés obertEn esta tesis doctoral se analiza la estructura y morfología inducida en láminas y placas delgadas obtenidas por distintos procesos de transformación. Éstas placas y láminas se prepararon en distintos espesores utilizando ... -
Synthesis of functionalized triblock copolyesters derived from lactic acid and macrolactones for bone tissue regeneration
(2023-04-09)
Article
Accés obertSynthetic and functional grafts are a great alternative to conventional grafts. They can provide a physical support and the precise signaling for cells to heal damaged tissues. In this study, a novel RGD peptide ...