Listar FRSFCO - Artículos de investigación por autor "Estenoz, Diana"
Mostrando ítems 1-20 de 39
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A thermostable laccase from Thermus sp. 2.9 and its potential for delignifcation of Eucalyptus biomass
Navas, Laura; Martinez, Fernando; Taverna, María E.; Fetherol, Morgan; Eltis, Lindsay; Nicolau, Verónica V.; Estenoz, Diana; Campos, Eleonora; Benintende, Graciela; Berreta, Marcelo (2019-04-02)Laccases are multicopper oxidases that are being studied for their potential application in pretreatment strategies of lignocellulosic feedstocks for bioethanol production. Here, we report the expression and characterization ... -
Additives based on vegetable biomass to improve the stabilisation of expansive clay soil
Orlandi, Sandra; Taverna, María E.; Villada, Yurany A.; Pique, Teresa; Laskowski, Cecilia; Nicolau, Verónica V.; Estenoz, Diana; Manzanal, Diego (2021-05)This paper investigates the effect of different bio-based additives on the expansiveness of an Argentinian natural clayey soil (CR-clay). CR-clay was characterised to determine (a) the Atterberg parameters and other index ... -
Ácido poliláctico a partir de lactosuero: I. Síntesis de lactido.
Garnero, Paula C.; Chiappero, Lucio R.; Nicolau, Verónica V.; Estenoz, Diana (2017-10-18)El ácido poliláctico (APL) es un biopolímero termoplástico que ha encontrado numerosas aplicaciones en el campo de la medicina y en la fabricación de envases descartables pero su costo es aún elevado comparado con los ... -
Bio-composite Films Based on Alginate and Rice Husk Tar Microparticles Loaded with Eugenol for Active Packaging
Taverna, María E.; Busatto, Carlos Alberto; Saires, Paula J.; Bertero, Melisa; Sedran, Ulises A.; Estenoz, Diana (2022-01-29)This work focused on the valorization of tar derived from rice husk pyrolysis as a precursor of matrices for the encapsulation of active principles. In this regard, the development of novel films based on alginate and ... -
Caracterización espectroscópica por resonancia magnética nuclear de resina de urea-formaldehído
Caula, Ma. Andrea; Estenoz, Diana; Nicolau, Verónica V. (Secyt UTN Facultad Regional San Francisco, 2020-10)Las resinas base de urea formaldehído (U-F) se obtienen por reacción entre la urea (U) y el formaldehído (F) y se utilizan principalmente como adhesivos en la fabricación de paneles de madera. El mecanismo de reacción ... -
Decorative laminates based on phenolic resins modified with sodium lignosulfonate and kraft lignin: Evaluation of mechanical properties
Taverna, María E.; Nicolau, Verónica V.; Ollearo, Rocío; Morán, Juan; Frontini, Patricia; Meira, Gregorio; Estenoz, Diana (2014-03)The substitution of phenol in the production of resol-type phenolic resins by environmentally-friendly compounds such as lignin and its derivatives is of great technological and academic interest, due to the similarity ... -
Efecto de la incorporación de nanopartículas de lignina iónica en la cristalización de polióxido de etileno
Taverna, María E.; Olmedo, Jorge; Busatto, Carlos Alberto; Zubitur, Manoli; Nicolau, Verónica V.; Estenoz, Diana; Müller, Alejandro J. (2020-04)El polióxido de etileno (POE) es un poliéter semicristalino cuya cinética de cristalización ha sido ampliamente estudiada tanto en el componente puro como en sus mezclas con otros polímeros amorfos y semicristalinos. Se ... -
Efecto del ph en la síntesis de resinas de urea-formaldehído: caracterización y modelo matemático
Caula, Ma. Andrea; Nicolau, Verónica V.; Estenoz, Diana (XII Simposio Argentino de Polímeros (Los Cocos), 2017-10-18)Se estudió teórica y experimentalmente la hidroximetilación-condensación de la urea a pH 4 y 9 a temperaturas 38ºC, 48 ºC, 60 ºC, 70 ºC y 90 ºC para sistemas diluidos homogéneos. Para el seguimiento de la reacción se usaron ... -
Effect of Kraft Lignin from Hardwood on Viscoelastic, Thermal, Mechanical and Aging Performance of High Pressure Laminates.
Taverna, María E.; Tassara, Oriana; Morán, Juan; Nicolau, Verónica V.; Estenoz, Diana; Frontini, Patricia (Waste and Biomass Valorization, 2017-07-10)In this work, the synthesis and characterization of phenol-formaldehyde resols modified with 10, 20 and 30 wt% of Kraft lignin (a waste from pulp industry) from hardwood were studied. In all cases, the Kraft lignin ... -
Empleo de Lignosulfonatos en la síntesis de resinas de Fenol-Formaldehido. Caracterización e hidroximetilación.
Chiappero, Lucio R.; Nicolau, Verónica V.; Estenoz, Diana (2018-05-29)Las resinas de fenol-formaldehído (PF) son polímeros sintéticos obtenidos por reacción entre el fenol (P) y el formaldehído (F). En la actualidad, la sustitución parcial del P por polímeros naturales, tales como las ligninas ... -
Empleo de Macropartículas de quitosano entrecruzadas con TPP como refuerzo en resinas epoxi basadas en DGEBA
Ruiz Miraglio, Sofía; Taverna, María E.; Busatto, Carlos Alberto; Helbling, I.; Estenoz, Diana; Nicolau, Verónica V. (Secyt UTN Facultad Regional San Francisco, 2019-10)Las resinas epoxi son materiales poliméricos, que presentan en su estructura uno o más anillos conocidos como epoxi, epóxido, u oxirano. Más del 75% del volumen de ventas de resinas epoxi corresponde a las derivadas ... -
Estudio experimental de la hidroximetilación del lignosulfonato de sodio proveniente de Eucalyptus grandis destinado a la modificación de resoles
Taverna, María E.; Nicolau, Verónica V.; Estenoz, Diana; Meira, Gregorio (2015-10-20)Las ligninas son polímeros naturales renovables que provienen en su mayoría de desechos de la industria papelera. Debido a sus características estructurales similares al fenol (derivado del petróleo, de importación en ... -
Estudio teórico y experimental de la síntesis de resinas de urea-formaldehído
Caula, Ma. Andrea; Nicolau, Verónica V.; Estenoz, Diana (Simposio Argentino de Polímeros, 2015-10-20)Se estudió teórica y experimentalmente la hidroximetilación-condensación de la urea a pH=9 y temperaturas 38ºC, 48 ºC, 60 ºC, 70 ºC y 90 ºC para sistemas diluidos homogéneos. Para el seguimiento de la reacción se usaron ... -
Hydroxymethylation of technical lignins from south-american sources with potential use in phenolic resins.
Taverna, María E.; Estenoz, Diana; Nicolau, Verónica V.; Felissia, Fernando; Area, María Cristina (2019-02-16)This work investigates the valorization of sodium lignosulfonate, kraft, and organosolv lignins from South America. A detailed characterization of the lignins and their chemical modification by hydroxymethylation, a reaction ... -
Lignin-based polyethylene films with enhanced thermal, opacity and biodegradability properties for agricultural mulch applications
Chiappero, Lucio R.; Bartolomei, Suellen S.; Estenoz, Diana; Moura, E. B.; Nicolau, Verónica V. (2020-09)Lignins are promising alternative raw materials for biocomposites due to their renewability, low cost and abundance. In this work, the use of (softwood and hardwood) Kraft lignins in the development of LLDPE/lignin films ... -
Mathematical modeling of urea-formaldehyde resins: specific acid-base catalysis
Caula, Ma. Andrea; Nicolau, Verónica V.; Estenoz, Diana (2018-11-06)Urea formaldehyde (U-F) base resins are obtained by reaction between urea (U) and formaldehyde (F) and are used mainly as adhesives in the manufacture of wood panels. -
Mechanical evaluation of laminates based on phenolic resins using lignins as partial substitutes for phenol
Taverna, María E.; Ollearo, Rocío; Morán, Juan; Nicolau, Verónica V.; Estenoz, Diana; Frontini, Patricia (Bioresources, 2015-10-28)Reducing the consumption of phenol during synthesis of phenolic resins is of great technological and scientific interest because of its economic and environmental implications. In this work, the use of hydroxymethylated ... -
Microparticles based on ionic and organosolv lignins for the controlled release of atrazine
Taverna, María E.; Busatto, Carlos Alberto; Lescano, Maia Raquel; Nicolau, Verónica V.; Zalazar, Cristina; Meira, Gregorio; Estenoz, Diana (Journal of Hazaourdos Materials, 2018-07-02)Lignins are natural polymers of the lignocellulosic biomass. Nowadays, there is a growing interest in developing value-added products based on lignins due to their renewability, low cost and abundance. In this work, ... -
Morphology modulation of silica mesoporous nano- and microparticles for atrazine - controlled release
Fookes, Federico A.; Busatto, Carlos Alberto; Taverna, María E.; Casis, Natalia; Lescano, Maia Raquel; Estenoz, Diana (2022-06-09)Atrazine is a moderately toxic triazine, used as a selective pre- and post-emergence herbicide. After application, it remains in the environment due to its low biodegradability causing severe environmental effects. Several ... -
On the use of espina corona gum as a polymeric additive in water-based drilling fluid
Villada, Yurany A.; Taverna, María E.; Maffi, Juan M.; Gilleta, Sebastián; Casis, Natalia; Estenoz, Diana (2022-06-26)The aim of this work is to evaluate the espina corona gum (ECG) as a sustainable viscosifier or filtration reducer additive in water-based drilling fluids (WBMs) as a potential replacement of guar gum (GG). ECG is ...