Exploració per tema "Àrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres"
Ara es mostren els items 1-20 de 20
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A new approach to the internal sizing of paper via biotechnological processes
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThis work deals with the study of a new biotechnological procedure, employing laccase in combination with hydrophobic compounds, for the biomodification of fibres and the internal sizing of paper. Cellulose fibres from ... -
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 ... -
Aprovechamiento de un residuo papelero para la obtención de nanocelulosa
(OmniaScience, 2021-02-01)
Comunicació de congrés
Accés obertLa constante búsqueda de mejoras productivas en la industria papelera y la creciente concienciación de la sociedad por los problemas derivados del uso de materiales procedentes de la industria petroquímica, hace que ... -
Bacterial cellulose for increasing barrier properties of paper products
(2018-08-07)
Article
Accés obertBacterial cellulose was combined with wood cellulose papers in order to obtain biomaterials with increased barrier properties. For this purpose, different parameters were assessed: two producing bacterial strains ... -
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 ... -
Coating of laccase-activated phenols for the industrially-feasible functionalization of cellulose-based substrates
(2014)
Comunicació de congrés
Accés restringit per política de l'editorialThe present work describes an innovative method for the hydrophobization of cellulosic material by impregnation with an enzymatically obtained functionalization solution (FS). Application of FS to the surface of previously ... -
Composites of cellulose nanocrystals in combination with either cellulose nanofibril or carboxymethylcellulose as functional packaging films
(Elsevier, 2022-06-30)
Article
Accés obertCellulose nanocrystals (CNC) were mixed with either cellulose nanofibril (CNF) or carboxymethylcellulose (CMC) in variable proportions (0/100, 20/80, 40/60, 50/50, 60/40, 80/20 and 100/0) to obtain cast films with acceptable ... -
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 d'aplicació de la lignina: d’un residu a un producte d’alt valor afegit
(Universitat Politècnica de Catalunya, 2016-06)
Treball Final de Grau
Accés restringit per decisió de l'autorLa lignina és un polímer que constitueix un dels principals components dels vegetals, en concret els fusters, la seva funció principal dins de la planta és de protecció física (proporciona rigidesa) i protecció química ... -
Estudio del potencial del cáñamo para la obtención de nuevos productos
(Universitat Politècnica de Catalunya, 2022-01-31)
Projecte Final de Màster Oficial
Accés restringit per acord de confidencialitat -
Evaluating the potential of ozone in creating functional groups on cellulose
(Springer, 2022-08-01)
Article
Accés obertSeveral eucalyptus pulps (85% of cellulose) with different lignin and HexA content (unbleached, TCF and ECF) as well as cotton linters (97% of cellulose) were treated with ozone (at different pH and ozone doses) in order ... -
Ionic liquid, ultrasound-assisted synthesis of lignin nanoparticles for barrier-enhanced all-cellulose nanocomposite films
(Springer Nature, 2023-10-05)
Article
Accés obertThe primary purpose of this work was to develop novel all-cellulose nanocomposite (ACNC) films by following a green approach that uses an ionic liquid as solvent and requires no additional reducing agents or stabilizers. ... -
Ionic liquids-assisted bioconversion of lignocellulosic biomass for the development of value-added products
(2021-10-11)
Article
Accés obertLignocellulosic biomass is the most abundant renewable and inexpensive source that can be used to produce biofuels and bioproducts. One of the major limitations of biomass valorisation is its recalcitrance to an efficient ... -
Lignin particles for multifunctional membranes, antioxidative microfiltration, patterning and 3D structuring
(2019-11-08)
Article
Accés obertWe introduce a new type of particle-based membrane based on the combination of lignin particles (LPs) and cellulose nanofibrils (CNF), the latter of which are introduced in small volume fractions to act as networking and ... -
Natural additives to enhance the barrier properties of nanocellulose films
(2022)
Comunicació de congrés
Accés obertFinding alternatives to fossil-based materials is one of the most important challenges of our time. Since cellulose is the most abundant natural polymer on the planet, its use to solve this challenge would be ideal. In the ... -
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 ... -
Silver-nanoparticle-impregnated cellulose nanofiber coating for packaging paper
(2016-01-09)
Article
Accés restringit per política de l'editorialIn this study, antimicrobial packaging was prepared by mixing colloidal silver nanoparticles with cellulose nanofiber (CNF) and depositing this hybrid coating (CNF/Ag) as a layer on different paper substrates. The CNF/Ag-coated ... -
The role of xylanases and laccases on hexenuronic acid and lignin removal
(2010-03)
Article
Accés restringit per política de l'editorial -
Transformation of a waste from the paper industry into a nanocellulosic material
(2022)
Comunicació de congrés
Accés obertThe constant search for productive improvements in the paper industry and the growing awareness of society about the problems derived from the use of fossil-based materials, are pushing the research efforts towards the ... -
Using unbleached bagasse fibers for fabricating magnetic paper
(2015)
Article
Accés obertMagnetic lignocellulosic fibers have good potential in applications such as information storage, security papers, electromagnetic shielding and etc. In this study unbleached bagasse fibers were used to fabricate magnetic ...