Exploració per autor "Beltramino Heffes, Facundo"
Ara es mostren els items 1-6 de 6
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Effects of a cellulase treatment on the preparation process and final properties of nanocrystalline cellulose
Beltramino Heffes, Facundo; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Torres López, Antonio Luis; Valls Vidal, Cristina (2015)
Comunicació de congrés
Accés restringit per política de l'editorialIn this work, we introduced an enzymatic treatment with a cellulase prior to NCC isolation from fibers via sulfuric acid hydrolysis, combining biotechnological and chemical procedures. NCC isolation process has typically ... -
Enzymatic-assisted preparation of nanocrystalline cellulose from non-wood fibers
Beltramino Heffes, Facundo (Universitat Politècnica de Catalunya, 2016-12-21)
Tesi
Accés obertIn the current scenario of growing environmental concerns, the search for innovative, renewable, non-polluting materials has never been as intensive as it is today. Cellulose, being the most abundant polymer on earth, ... -
Exploring the effects of treatments with carbohydrases to obtain a high-cellulose-content pulp from a non-wood alkaline pulp
Beltramino Heffes, Facundo; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2015-07-14)
Article
Accés obertIn this work, treatments with a xylanase (X) and carbohydrases mixture (Cx) were 19 applied on a TCF bleached sisal pulp in order to obtain high-cellulose content fibers 20 applicable on a wide range of uses. A limit of ... -
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 ... -
Optimization of sulfuric acid hydrolysis conditions for preparation of nanocrystalline cellulose from enzymatically pretreated fibers
Beltramino Heffes, Facundo; Roncero Vivero, María Blanca; Torres López, Antonio Luis; Vidal Lluciá, Teresa; Valls Vidal, Cristina (2016-03-22)
Article
Accés obertNCC preparation using sulfuric acid hydrolysis from cellulase pretreated fibers was optimized in order to obtain the highest possible yield with 62% and 65% wt. sulfuric acid throughout two statistical plans. At optimal ... -
Using glycosidases to modify TCF bleached specialty sisal fibers
Beltramino Heffes, Facundo; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2014)
Comunicació de congrés
Accés restringit per política de l'editorialModifying fibers in order to upgrade them to dissolving grade involves several changes. Paper grade pulps can be used to yield this kind of raw materials, if the necessary modifications are carried out. Classic processes ...