Exploració per autor "Roncero Vivero, María Blanca"
Ara es mostren els items 73-92 de 132
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Improving filmogenic and barrier properties of nanocellulose films by addition of biodegradable plasticizers
Fernández Santos, Julia; Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca (2021-07-14)
Article
Accés obertCellulose nanocrystals (CNCs) were mixed with various additives to obtain films with good barrier and mechanical properties as replacements for petroleum-based plastics. The influence of different doses of additives including ... -
Increasing yield of nanocrystalline cellulose preparation process by a cellulase pretreatment
Beltramino Heffes, Facundo; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Torres López, Antonio Luis; Valls Vidal, Cristina (2015-06-09)
Article
Accés obertIn this work the introduction of a cellulase treatment prior to NCC isolation was assessed. NCC was produced using sulfuric acid at two different concentrations (62 and 64% wt.). The effect of pore size for filtration step ... -
Influence of enzyme and chemical adsorption on the thermal degradation path for eucalyptus pulp
Barneto, A. G.; Valls Vidal, Cristina; Ariza, José; Roncero Vivero, María Blanca (2013)
Article
Accés restringit per política de l'editorialChanges in thermal degradation path of eucalyptus pulp support enzymes (laccase from Trametes villosa) and chemicals (Tris–HCl or tartrate–tartaric buffer) adsorption on cellulose during biobleaching, thereby increasing ... -
Integrating a xylanase treatment into an industrial-type sequence for eucalyptus kraft pulp bleaching
Fillat Latorre, Úrsula; Roncero Vivero, María Blanca; Sacón, Vera Maria; Bassa, Alexandre (American Chemical Society (ACS), 2012)
Article
Accés restringit per política de l'editorialThe influence of a treatment with two commercial xylanases on pulp and effluents obtained after the bleaching stages in the OXAZDP (O, oxygen stage; X, xylanase treatment; A, acid stage; Z, ozone stage; D, chlorine dioxide ... -
Inter-laboratory comparisons of hexenuronic acid measurements in kraft eucalyptus pulps using a UV-Vis spectroscopic method
Zhu, Yufan; Zhou, H.F; Chai, X.S; Johannes, Donna; Pope, Richard; Valls Vidal, Cristina; Roncero Vivero, María Blanca (2014-01-01)
Article
Accés restringit per política de l'editorialAn inter-laboratory comparison of a UV-Vis spectroscopic method (TAPPI T 282 om-13 “Hexeneuronic acid content of chemical pulp”) for hexeneuronic acid measurements was conducted using three eucalyptus kraft pulps. The pulp ... -
Ionic liquid, ultrasound-assisted synthesis of lignin nanoparticles for barrier-enhanced all-cellulose nanocomposite films
Amini, Elahe; Valls Vidal, Cristina; Roncero Vivero, María Blanca (Springer Nature, 2023-10-05)
Article
Accés obertThe primary purpose of this work was to develop novel all-cellulose nanocomposite (ACNC) films by following a green approach that uses an ionic liquid as solvent and requires no additional reducing agents or stabilizers. ... -
Ionic liquid/ZnO assisted preparation of high barrier cellulose nanocomposite films by in situ ring-opening polymerization of lactide monomers
Amini, Elahe; Valls Vidal, Cristina; Yousefi, Hossein; Roncero Vivero, María Blanca (Springer, 2023-01-03)
Article
Accés obertCellulose-based composites have aroused increasing interest as potential replacements for fossil fuel-based plastics. In this work, transparent cellulose-grafted-PLA nanocomposite films were prepared by grafting polylactide ... -
Ionic liquids-assisted bioconversion of lignocellulosic biomass for the development of value-added products
Amini, Elahe; Valls Vidal, Cristina; Roncero Vivero, María Blanca (2021-10-11)
Article
Accés obertLignocellulosic biomass is the most abundant renewable and inexpensive source that can be used to produce biofuels and bioproducts. One of the major limitations of biomass valorisation is its recalcitrance to an efficient ... -
La relació amb la natura en el disseny d’un packaging per a e-commerce
Escursell Martínez, Silvia; Llorach Massana, Pere; Roncero Vivero, María Blanca (OmniaScience, 2023-03)
Comunicació de congrés
Accés obertCom a dissenyadors podem aportar una visió més holística a l’hora de repensar en nous materials i processos de producció pel packaging d’e-commerce. És per aquesta raó que l’estudi de la natura i la relació amb ella ens ... -
Laccase/TEMPO-mediated bacterial cellulose functionalization: production of paper-silver nanoparticles composite with antimicrobial activity
Morena Gatius, Ángela Gala; Roncero Vivero, María Blanca; Valenzuela, Susana V.; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Javier Pastor, F.I.; Diaz Lucea, M. Pilar; Martínez Martínez, Josefina (2019-01-01)
Article
Accés obertBacterial cellulose (BC) was functionalized applying the Laccase/TEMPO oxidative treatment, leading to a five-fold increase of the concentration of carboxyl groups. Paper produced with this cellulose showed improved ... -
Lignin particles for multifunctional membranes, antioxidative microfiltration, patterning and 3D structuring
Cusola Aumedes, Oriol; Rojas, Orlando J.; Roncero Vivero, María Blanca (2019-11-08)
Article
Accés obertWe introduce a new type of particle-based membrane based on the combination of lignin particles (LPs) and cellulose nanofibrils (CNF), the latter of which are introduced in small volume fractions to act as networking and ... -
Materials a base de partícules de lignina consolidats amb nanofibres de cel·lulosa: aplicació com a membranes de microfiltració antioxidant
Cusola Aumedes, Oriol; Rojas, Orlando; Roncero Vivero, María Blanca (OmniaScience, 2020-01-31)
Text en actes de congrés
Accés obertEn aquest treball introduïm un nou tipus de membrana a base de partícules mitjançant la combinació de partícules de lignina (PL) i nanofibres de cel·lulosa (NFC), les quals s’introdueixen en fraccions de petit volum. Les ... -
Materials and manufacturing methods for EWOD devices: current status and sustainability challenges
Caro Pérez, Oriol; Casals Terré, Jasmina; Roncero Vivero, María Blanca (Wiley (John Wiley & Sons), 2023-01)
Article
Accés obertElectrowetting-on-dielectric (EWOD) devices have proven to be effective tools for precise microfluidic manipulation or in liquid lenses that surpass conventional solid lenses in versatility. However, the fabrication of ... -
Materials based on cellulose for e-commerce packaging
Escursell Martínez, Silvia; Valls Vidal, Cristina; Llorach-Massana, Pere; Roncero Vivero, María Blanca (Ca' Foscari University of Venice, 2023)
Comunicació de congrés
Accés restringit per política de l'editorialAs a result of the pandemic and the new tax on the use of plastics in the EU, the consumption of cellulose has increased, especially for cardboard boxes as e-commerce packaging. Due to this high demand, the price of cellulose ... -
Mejora de las propiedades de films de nanocelulosa mediante la adición de plastificantes para su aplicación en la industria del embalaje de alimentos
Fernández Santos, Julia; Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca (OmniaScience, 2021-02-01)
Comunicació de congrés
Accés obertA partir de la mezcla de nanocelulosa cristalina (CNC) con varios aditivos naturales, se obtuvieron films con buenas propiedades barrera y mecánicas como posibles sustitutos de los plásticos convencionales derivados del ... -
Natural additives to enhance the barrier properties of nanocellulose films
Fernández Santos, Julia; Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca (2022)
Comunicació de congrés
Accés obertFinding alternatives to fossil-based materials is one of the most important challenges of our time. Since cellulose is the most abundant natural polymer on the planet, its use to solve this challenge would be ideal. In the ... -
New strategies to bleach dissolving pulps using enzymatic treatments
Quintana, Elisabet; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2014)
Text en actes de congrés
Accés obertA biobleaching sequence was applied to sulphite pulp in order to explore new bleaching possibilities using enzymatic treatments. Therefore, the well-known laccase-mediator system was used with the aim to achieve dissolving ... -
Novel applications of nonwood cellulose for blood typing assays
Casals Terré, Jasmina; Farré Lladós, Josep; Zuñiga, Allinson; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa (2018-10-03)
Article
Accés obertPaper-based microfluidics devices can create a new healthcare model. Cellulose is carbohydrate polymer biocompatible and hydrophilic. These characteristics enhance the development of user-friendly diagnostic devices, but ... -
Obtaining biobleached eucalyptus cellulose fibres by using various enzyme combinations
Valls Vidal, Cristina; Cadena Chamorro, Edith Marleny; Roncero Vivero, María Blanca (2013)
Article
Accés restringit per política de l'editorialVarious combinations of laccases, xylanase and cellulase were used to biobleach cellulose fibres from eucalyptus. The Trametes villosa and Myceliophthora thermophila laccases were used in combination with violuric acid ... -
Obtaining low-HexA-content cellulose from eucalypt fibres: which glycosil hydrolase family is more efficient?
Valls Vidal, Cristina; Vidal Lluciá, Teresa; Gallardo Román, Óscar; Díaz, Pilar; Pastor Blasco, Francisco I. Javier; Roncero Vivero, María Blanca (2010-03-25)
Article
Accés restringit per política de l'editorialFour new bacterial xylanases from different glycosyl hydrolase families (11, 10 and 5) were evaluated for hexenuronic acid (HexA) removal capacity and bleach boosting ability of a eucalypt kraft pulp. The family 11 xylanase ...