Listar por tema "Hydroxymethylation"
Mostrando ítems 1-4 de 4
-
Determinación de grupos hidroxilo fenólicos reactivos en lignina Kraft de madera dura por titulación acuosa potenciométrica
(AJEA- Actas de Jornadas y Eventos Académicos de UTN, 2023-12)Las ligninas Kraft son polímeros naturales polifenólicos de estructura compleja cuya baja reactividad puede sortearse mediante la activación por hidroximetilación con incorporación de grupos hidroximetilo reactivos necesarios ... -
Lignin-phenol-formaldehyde resol for high pressure decorative laminates evaluation of lignin levels on final properties
(2023-06)High pressure decorative laminates (HPDL) are composite materials made of core layers of Kraft papers impregnated with a resol type phenol-formaldehyde resin (PF) and a surface décor paper saturated with melamine-formaldehyde ... -
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 ... -
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 ...