Articles de revista: Enviaments recents

Ara es mostren els items 1-12 de 46

    • Ice-template crosslinked PVA aerogels modified with tannic acid and sodium alginate 

      Cruz Jesús, Lucía Guadalupe de la; Abt, Tobias Martin; León Albiter, Noel; Wang, Liang; Sánchez Soto, Miguel (Multidisciplinary Digital Publishing Institute (MDPI), 2022-07-01)
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      With the commitment to reducing environmental impact, bio-based and biodegradable aerogels may be one approach when looking for greener solutions with similar attributes to current foam-like materials. This study aimed to ...

    • Characteristic time of strain induced crystallization of crosslinked natural rubber 

      Candau, Nicolas; Chazeau, Laurent; Chenal, Jean Marc; Gauthier, Catherine; Ferreira Somoza, Jose Antonio; Munch, Etienne; Rochas, Cyrille (Elsevier, 2012-06)
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      Real time Wide-Angle X-ray Scattering (WAXS) measurements during cyclic tensile tests at high strain rates (from 8 s-1–280 s-1) and at room temperature on crosslinked Natural Rubber (NR) are performed thanks to a specific ...

    • Strain-induced crystallization of natural rubber and cross-link densities heterogeneities 

      Candau, Nicolas; Laghmach, Rabia; Chazeau, Laurent; Chenal, Jean Marc; Gauthier, Catherine; Biben, Thierry; Munch, Etienne (American Chemical Society (ACS), 2014-08-26)
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      Strain-induced crystallization (SIC) of natural rubber (NR) is characterized during a cyclic deformation at room temperature and low strain rate (~10–3 s–1) using in situ wide angle X-rays scattering (WAXS) measurements. ...

    • Strain induced crystallization and melting of natural rubber during dynamic cycles 

      Candau, Nicolas; Chazeau, Laurent; Chenal, Jean Marc; Gauthier, Catherine; Ferreira Somoza, Jose Antonio; Munch, Etienne; Thiaudière, Dominique (Royal Society of Chemistry (RSC), 2015)
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      Strain-induced crystallization (SIC) of natural rubber (NR) is studied during dynamic cycles at high frequencies (with equivalent strain rates ranging from 7.2 s-1 to 290 s-1). The testing parameters are varied: the ...

    • EcoBlends’up: PLA/BioPA blends composites, microfibrillated “in situ” through additive manufacturing 

      Martínez Orozco, Leandro Isidro; León Albiter, Noel; Cailloux, Jonathan; Sánchez Soto, Miguel; Maspoch Rulduà, M. Lluïsa; Santana Pérez, Orlando Onofre (2022-04)
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      In certain polymer blends, a properly oriented microfibrillar morphology of the dispersed phase during the processing stage can generate a reinforcing effect by increasing the fracture toughness, especially in the crack ...

    • Influence of the melt extrusion process on the mechanical behavior and the thermal properties of ethylene vinyl alcohol copolymer by applying the successive self-nucleation and annealing thermal fractionation 

      Franco Urquiza, Edgar A.; Santana Pérez, Orlando Onofre; Maspoch Rulduà, M. Lluïsa (2021-04-26)
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      Ethylene vinyl alcohol copolymer was processed three times in a twin-screw extrusion pilot plant in order to reproduce the processing steps required to obtain EVOH nanocomposites. Thin film of the extruded EVOH was prepared ...

    • Poly (Lactic Acid)/Ground Tire Rubber blends using peroxide vulcanization 

      Candau, Nicolas; Oguz, Oguzhan; León Albiter, Noel; Maspoch Rulduà, M. Lluïsa (Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-06)
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      Poly (Lactic Acid) (PLA)/Ground Tire Rubber (GTR) blends using Dicumyl peroxide (DCP) as a crosslinking agent were prepared with the following aims: propose a new route to recycle wastes rubber from the automotive industry ...

    • Hydrostatic pressure dependence in tensile and compressive behavior of an acrylonitrile–butadiene–styrene copolymer 

      Verbeeten, Wilco M. H.; Sánchez Soto, Miguel; Maspoch Rulduà, M. Lluïsa (Wiley, 2022-02-26)
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      The strain-rate dependence of a commercial grade ABS copolymer has been analyzed in both compression and tension. By measuring in two loading geometries, the hydrostatic pressure-dependence on the material's deformation ...

    • Orientation of polylactic acid–chitin nanocomposite films via combined calendering and uniaxial drawing: Effect on structure, mechanical, and thermal properties 

      Singh, Shikha; Kumar Patel, Mitul; Geng, Shiyu; Teleman, Anita; Herrera, Natalia; Schwendemann, Daniel; Maspoch Rulduà, M. Lluïsa; Oksman, Kristiina (2021-12-06)
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      The orientation of polymer composites is one way to increase the mechanical properties of the material in a desired direction. In this study, the aim was to orient chitin nanocrystal (ChNC)-reinforced poly(lactic acid) ...

    • Kinetics of the thermal degradation of poly(Lactic acid) and polyamide bioblends 

      Carrasco, Félix; Santana Pérez, Orlando Onofre; Maspoch Rulduà, M. Lluïsa (Multidisciplinary Digital Publishing Institute (MDPI), 2021-11-19)
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      Poly(lactic acid) (PLA) and biosourced polyamide (PA) bioblends, with a variable PA weight content of 10–50%, were prepared by melt blending in order to overcome the high brittleness of PLA. During processing, the properties ...

    • Elastocaloric effect in vulcanized natural rubber and natural/wastes rubber blends 

      Candau, Nicolas; Vives Santa-Eulàlia, Eduard; Fernández Renna, Ana Inés; Maspoch Rulduà, M. Lluïsa (Elsevier, 2021-11-30)
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      Vulcanized natural/wastes rubber blends were prepared and their elastocaloric properties were analysed. A thermodynamic frame was used to discriminate the contributions of thermoelastic effects and strain induced ...

    • Structure and properties of reactively extruded opaque post-consumer recycled PET 

      Candal Pazos, Maria Virginia; Safari, Maryam; Fernandez, Mercedes; Otaegi, Itziar; Múgica, Agurtzane; Zubitur, Manuela; Guerrica-Echevarria, Gonzalo; Sebastián Cabeza, Victor; Irusta Alderete, Silvia; Loaeza, David; Maspoch Rulduà, M. Lluïsa; Santana Pérez, Orlando Onofre; Müller, Alejandro J. (Multidisciplinary Digital Publishing Institute (MDPI), 2021-10-01)
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      The recyclability of opaque PET, which contains TiO2 nanoparticles, has not been as well-studied as that of transparent PET. The objective of this work is to recycle post-consumer opaque PET through reactive extrusion with ...