Browsing Artículos, Comunicaciones, Libros by Author "Eceiza, Arantxa"
Now showing items 41-60 of 64
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Optically active multilayer films based on chitosan and an azopolymer
Fernández Salvador, Raquel; Ocando, Connie; Fernandes, Susana C. M.; Eceiza Mendiguren, María Aranzazu; Tercjak Sliwinska, Agnieszka (2014-02-24)The layer-by-layer technique has been widely adopted for the fabrication of nanostructures with tailored properties. In this work, photoactive multilayer films consisting of alternating layers of chitosan and an azopolymer ... -
Polyurethane films prepared with isophorone diisocyanate functionalized wheat starch
Hosseinpourpia, Reza; Adamopoulos, Stergios; Santamaría Echart, Arantzazu; Eceiza Mendiguren, María Aranzazu (Elsevier, 2021-12-05)[EN]This study reports the fabrication and performance of sustainable polyurethane (PU) films based on wheat starch (native NS, modified MS), bio-polyols (1,3-propanediol PD, glycerol Gly), and polymeric diphenylmethane ... -
Polyurethane Wood Adhesives Prepared from Modified Polysaccharides
Hosseinpourpia, Reza; Eceiza Mendiguren, María Aranzazu; Adamopoulos, Stergios (MDPI, 2022-01-28)This study investigated the performance of polyurethane adhesives prepared with various combinations of wheat starch that had been modified by isophorone diisocyanate (MS), two polyol types (1,3-propanediol (PD) and glycerol ... -
Preparation and characterization of composites based on poly(lactic acid)/poly(methyl methacrylate) matrix and sisal fiber bundles: The effect of annealing process
Orue Mendizabal, Ander; Anakabe Onaindia, Jon; Zaldua Huici, Ane Miren; Eceiza Mendiguren, María Aranzazu; Arbelaiz Garmendia, Aitor (Sage, 2020-06-12)The interest on poly(lactic acid) (PLA)/poly(methyl methacrylate) (PMMA) blends has increased during the last years due to their promising properties. The novelty of the current work focuses on the preparation and ... -
Properties of flexible polyurethane foams containing isocyanate functionalized kraft lignin
Gómez Fernández, Sandra; Ugarte Soraluce, Lorena; Calvo Correas, Tamara; Peña Rodríguez, Cristina; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (Elsevier, 2017-02-20)A commercial kraft lignin (k-lignin) was successfully functionalized by means of the reaction of an isocyanate group from isophorone diisocyanate (IPDI) with hydroxyl groups present in lignin (k-IPDI), for their further ... -
Properties of flexible polyurethane foams with isocyanate functionalized lignin
Gómez Fernández, Sandra; Ugarte Soraluce, Lorena; Calvo Correas, Tamara; Peña Rodríguez, Cristina; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (Elsevier, 2017-02-20)A commercial kraft lignin (k-lignin) was successfully functionalized by means of the reaction of an isocyanate group from isophorone diisocyanate (IPDI) with hydroxyl groups present in lignin (k-IPDI), for their further ... -
Residues from rigid foams and graphene for the synthesis of hybrid polyurethane flexible foams composites
Calvo Correas, Tamara; Ugarte Soraluce, Lorena; Larraza Arocena, Izaskun; Peña Rodríguez, Cristina; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (Elsevier, 2021-06)Hybrid biobased polyurethane flexible foam composites containing a residue from surf industry (polyurethane powder) as filler and graphite or graphene residue were synthe-sized. It was observed that the addition of the ... -
Self-assembly and crystallization of double crystalline aliphatic thermoplastic biopolyurethane and its nucleation with cellulose nanocrystals
Fernández d'Arlas Bidegain, Borja; Arteaga, Ana Gabriella; Saralegui Otamendi, Ainara; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu; Müller Sánchez, Alejandro Jesús (Elsevier, 2022-01-13)[EN] An aliphatic segmented thermoplastic biopolyurethane (STPU), based on aliphatic hexamethylene diisocyanate (HDI) and 1,3 propanediol (1,3PD) as urethane rich phase and a poly(sebacate) as a macrodiol phase, with ~50 ... -
Shape-memory properties of crosslinked biobased polyurethanes
Calvo Correas, Tamara; Gabilondo López, Nagore; Alonso Varona, Ana Isabel; Palomares Casado, Teodoro; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (2016-03-25)Biobased crosslinked polyurethanes were synthesized and characterized as shape-memory polymers. Both the macrodiol and the diisocyanate were derived from renewable sources; the first one from castor oil, and the second one ... -
Strain sensitive conductive polyurethane foam/graphene nanocomposites prepared by impregnation method
Ugarte Soraluce, Lorena; Gómez Fernández, Sandra; Tercjak Sliwinska, Agnieszka ; Martinez-Amesti, Ana; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (Elsevier, 2017-03-14)Se prepararon nanocompuestos de espuma de poliuretano conductores mediante la incorporación de flakes de grafeno. Los flakes de grafeno se obtuvieron a partir de grafito por el método de exfoliación líquida en N metilpirrolidona ... -
Superabsorbent bacterial cellulose spheres biosynthesized from winery by-products as natural carriers for fertilizers
Díaz Ramírez, Julen; Urbina Moreno, Leire; Eceiza Mendiguren, María Aranzazu; Retegui Miner, Aloña; Gabilondo López, Nagore (Elsevier, 2021-11-30)[EN]Soil contamination, sustainable management of water resources and controlled release of agrochemicals are the main challenges of modern agriculture. In this work, the synthesis of sphere-like bacterial cellulose (BC) ... -
Synthesis and characterisation of polyurethane elastomers with semi-products obtained from polyurethane recycling.
Kopczyska, Patrycja; Calvo Correas, Tamara; Eceiza Mendiguren, María Aranzazu; Datta, Janusz (2016-10-01)In this work polyurethane elastomers were synthesised by using different mixtures of a petrochemical and glycerolysate polyols and 4,4-diphenylmethane diisocyanate (MDI). Glycerolysate polyol was produced from polyurethane ... -
Synthesis and characterization of polyurethanes with high renewable carbon content and tailored properties.
Calvo Correas, Tamara; Martín Alberdi, María Dolores; Retegui Miner, Aloña; Gabilondo López, Nagore; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (2016-08-31)Thermoplastic and cross-linked biobased polyurethanes with a renewable carbon content ranging from 78 to 98% were synthesized and characterized. The macrodiol and the diisocyanate used were derived from renewable source, ... -
Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media
Santamaría Echart, Arantzazu; Fernandes, Isabel; Saralegui Otamendi, Ainara; Costa, Mário Rui P. F. N.; Barreiro, Filomena; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (Elsevier, 2016-05-13)[EN Hypothesis: The possibility of tailoring the final properties of environmentally friendly waterborne polyurethane and polyurethane-urea dispersions and the films they produce makes them attractive for a wide range ... -
Tailoring Mechanical Properties of Rigid Polyurethane Foams by Sorbitol and Corn Derived Biopolyol Mixtures
Ugarte Soraluce, Lorena; Gómez Fernández, Sandra; Peña Rodriguez, Cristina; Prociak, Aleksander; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (ACS, 2015-10-28)Sorbitol arises to be a strong candidate for renewably sourced polyol synthesis. Moreover, processes for extracting sorbitol directly from cellulosic materials are effective, and materials such as agroforestry residues ... -
The effect of the carboxylation degree on cellulose nanofibers and waterborne polyurethane/cellulose nanofiber nanocomposites properties
Larraza Arocena, Izaskun; Vadillo del Ser, Julen; Santamaría Echart, Arantzazu; Tejado, Alvaro; Azpeitia, Maider; Vesga, Eneritz; Orue Mendizabal, Ander; Saralegui Otamendi, Ainara; Arbelaiz Garmendia, Aitor; Eceiza Mendiguren, María Aranzazu (Elsevier Ltd., 2020-03)[EN] There has been an exponential rise in the interest for waterborne polyurethanes (WBPU), due to the easy customizability of their properties and their ecofriendly nature. Moreover, their aqueous state facilitates the ... -
The Importance of Coupling Agent on Tensile and Thermomechanical Performance of Annealed Composites Based on Poly(Lactic Acid)/Poly(Methyl Methacrylate) Matrix and Sisal Fiber Bundles
Orue Mendizabal, Ander; Anakabe Onaindia, Jon; Zaldua Huici, Ane Miren; Eceiza Mendiguren, María Aranzazu; Arbelaiz Garmendia, Aitor (Taylor & Francis, 2021-04-22)The main aim of this work is to study the importance of the coupling agent on tensile and thermomechanical performance of annealed composites based on poly (lactic acid)/poly (methyl methacrylate) matrix and sisal ... -
The Importance of Fiber/Matrix Adhesion and Annealing Process in Water Uptake of PLA/PMMA Matrix Composites Reinforced with Sisal Fibers: The Effect of Coupling Agent Addition
Orue Mendizabal, Ander; Anakabe Onaindia, Jon; Zaldua Huici, Ane Miren; Eceiza Mendiguren, María Aranzazu; Arbelaiz Garmendia, Aitor (Taylor & Francis, 2022-01-22)With the aim to open new applications possibilities to novel biocomposites based on PLA/PMMA matrix and reinforced with sisal fibers, it was studied the effect of water immersion aging on biocomposite tensile properties. ... -
Thermally-responsive biopolyurethanes from a biobased diisocyanate
Calvo Correas, Tamara; Santamaría Echart, Arantzazu; Saralegui Otamendi, Ainara; Martín Alberdi, María Dolores; Valea Pérez, Angel; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (Elsevier, 2015-09)In this work, segmented biopolyurethanes with thermally-activated shape-memory properties were synthesized and characterized. All the employed starting materials were derived from renewable sources. The macrodiol, which ... -
Thermoplastic polyurethanes with glycolysate intermediates from polyurethane waste recycling.
Calvo Correas, Tamara; Ugarte Soraluce, Lorena; Jutrzenka Trzebiatowska, Patrycja; Sanzberro, Rafael; Datta, Janusz; Corcuera Maeso, María Ángeles; Eceiza Mendiguren, María Aranzazu (Elsevier, 2017-10)The polyol is a major component in polyurethane formulations and therefore introducing to the formulation recycled polyol (obtained during decomposition process) allows decreasing the usage of pure petrochemical components. ...