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Synthesis and mechanical properties of laminates based on phenolic resins modified with sodium lignosulfonate.
(Latin American Applied Research, 2017-05-08)
The reduction of phenol and/or formalde-hyde consumption during phenolic resin synthesis is of great technological and scientific interest because of its economic and environmental implications.
In this work, the addition ...
Synthesis and characterization of new thermosetting polybenzoxazines with other functional groups in the network
(Journal of Polymer Research, 2018-03-03)
The reduction of phenol and/or formalde-hyde consumption during phenolic resin synthesis is of great technological and scientific interest because of its economic and environmental implications.
In this work, the addition ...
Preparación y caracterización de nano- y micropartículas de sílice para la liberación controlada de atrazina
(AJEA- Actas de Jornadas y Eventos Académicos de UTN, 2021-11-29)
La atrazina (2-cloro-4-etilamina-6-isopropilamina-s-triazina) es una triazina moderadamente tóxica, utilizada como herbicida selectivo de pre y post-emergencia. Después de su aplicación permanece en el medio ambiente debido ...
Empleo de Macropartículas de quitosano entrecruzadas con TPP como refuerzo en resinas epoxi basadas en DGEBA
(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 ...
Technical lignins modified by hydroxymethylation for the production of decorative laminates: Synthesis, characterization and mathematical modelling
(2017-03)
Technical lignins are natural and renewable poly-phenolic polymers obtained mainly as a subproduct from the pulp industry. It presents a complex structure that depends on the wood type and the pulping process adopted to ...
Decorative laminates based on phenolic resins modified with sodium lignosulfonate and kraft lignin: Evaluation of mechanical properties
(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 ...
Synthesis and mechanical characterization of high pressure laminates modified with Kraft lignin
(255th ACS National Meeting Exposition New Orleans, 2018-04)
Phenol-formaldehyde resins (PF) are thermosetting polymers used as adhesives for plywoods and other structural wood products including high pressure laminates (HPLs). HPLs are composite materials comprised of a paper-based ...
Efecto de la incorporación de nanopartículas de lignina iónica en la cristalización de polióxido de etileno
(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 ...
Supernucleation dominates lignin/poly(ethylene oxide) rystallization kinetics
(2022-08)
The effect of lignin nanoparticles (LNPs) on the crystallization kinetics of poly(ethylene oxide) (PEO) is examined. Lignin from spruce and ionic isolation was used to prepare LNPs with a number-averaged diameter of 85 nm ...
Additives based on vegetable biomass to improve the stabilisation of expansive clay soil
(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 ...