Exploració per tema "Wood-pulp"
Ara es mostren els items 1-15 de 15
-
Alternative chemo-enzymatic treatment for homogeneous and heterogeneous acetylation of wood fibers
(2018-07-18)
Article
Accés obertA new chemo-enzymatic treatment is proposed to produce cellulosic fibers suitable for heterogeneous- or homogeneous-phase acetylation. The procedure included enzymatic (laccase–violuric acid) lignin removal from the precursor ... -
Assessment of the potential of enzymes to produce dissolving pulps
(Universidade de Aveiro, 2018)
Comunicació de congrés
Accés restringit per política de l'editorialIn this work, a totally chlorine free (TCF) sequence including a laccase-mediator system was developed in a softwood sulfite pulp. Then, purification was carried out employing strong alkaline extractions and hydrolytic ... -
Bacterial cellulose-chitosan paper with antimicrobial and antioxidant activities
(2020-03-12)
Article
Accés obertThe production of paper-based bacterial cellulose-chitosan (BC-Ch) nanocomposites was accomplished following two different approaches. In the first, BC paper sheets were produced and then immersed in an aqueous solution ... -
Cellulose acetate films from chemo-enzymatic dissolving pulps
(2022)
Comunicació de congrés
Accés obertThe purpose of this work is to obtain dissolving cellulose fibers that are suitable for the manufacturing of cellulose derivatives. Therefore, the combination of enzymatic and chemical treatments during the bleaching stage ... -
Diseño de costes de una empresa industrial productora de pasta de celulosa
(Universitat Politècnica de Catalunya, 2020-06)
Treball Final de Grau
Accés restringit per acord de confidencialitat
Realitzat a/amb: Universidad de Buenos Aires -
Dissolving-grade pulp: a sustainable source for fiber production
(2024-01-10)
Article
Accés obertThe global textile fiber output increased five times from 1975 to 2020. Also, in 2010, the combined demand for man-made and natural fibers was projected to increase by 84% within 20 years. Clothing materials are largely ... -
Enhanced fully cellulose based forward and reverse blood typing assay
(2019-05-07)
Article
Accés obertThis study presents an enhanced paper-based analytical device (PAD) for forward and reverse group blood typing. The proposed PAD uses a novel methodology, which provides highly reliable results on a fully cellulose based ... -
Estudi de la modificació de suports cel·lulòsics per a l'obtenció de dispositius microfluídics
(Universitat Politècnica de Catalunya, 2015-06)
Treball Final de Grau
Accés restringit per decisió de l'autorEls dispositius microfluídics en suport cel·lulòsic ofereixen un nou sistema per al maneig de fluids i anàlisi de l’analit per a una gran varietat d'aplicacions, incloent el diagnòstic de salut, la vigilància ambiental i ... -
Estudi de l’impacte d’un tractament biotecnològic en l’envelliment i degradació de fibres d’ecualiptus
(Universitat Politècnica de Catalunya, 2015-06-22)
Treball Final de Grau
Accés restringit per decisió de l'autorEs partirà de tres mostres de fibres d’eucaliptus amb diferents continguts d’àcids hexenurònics i de lignina, segons el procés de fabricació. S’aplicaran tractaments biotecnològics i químics sobre cadascuna de les mostres. ... -
Exploring the effects of treatments with carbohydrases to obtain a high-cellulose-content pulp from a non-wood alkaline pulp
(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 ... -
Influence of enzyme and chemical adsorption on the thermal degradation path for eucalyptus pulp
(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 ... -
Investigation of catalyst and solvent systems for the catalytic oxidation of Kraft lignin
(Universitat Politècnica de Catalunya / Eidegenössische Technische Hochschule Zürich, 2010)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorLignin is one of the main constituents of wood together with cellulose and hemicellulose and can be used as a renewable feedstock for the production of chemicals. Lignin is an amorphous polymer which is separated from ... -
Laccase/TEMPO-mediated bacterial cellulose functionalization: production of paper-silver nanoparticles composite with antimicrobial activity
(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 ... -
Potencial de la celulosa en la construcción de nuevos materiales
(2019)
Text en actes de congrés
Accés obertActualmente, más de una tercera parte de los tipos de papeles que hoy empleamos son para nuevos usos que hace diez años no existían. Además, la demanda creciente de productos basados en materias primas renovables y la ... -
Valorization of paper waste sludge to produce films for packaging
(Ca' Foscari University of Venice, 2023)
Comunicació de congrés
Accés restringit per política de l'editorialThe global production of paper was more than 400 million tons in 2020, and about 40–50 kg of dry sludge/ton paper produced was generated. The management of this huge volume of solid waste material has become a serious ...