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Enzymatic treatments of pulp using laccase and hydrophobic compounds
García Ubasart, Jordi; Esteban, Alberto; Vila Babarro, Carlos; Roncero Vivero, María Blanca; Colom Pastor, José F.; Vidal Lluciá, Teresa
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera; Universitat Politècnica de Catalunya. CIPAGRAF - Grup de Recerca Paperer i Gràfic
The aim of this work was to develop an innovative method for the internal sizing of paper by use of laccase and hydrophobic compounds. Nine different products containing hydrophobic moieties were tested in combination with laccase derived from Trametes villosa on Eucalyptus globulus kraft pulp in order to assess their internal sizing capability. The strongest internal sizing effect was obtained with lauryl gallate (LG). Heat treatment of the handsheets was found to increase the resistance to water absorption of internally sized samples significantly. Tests were conducted under variable operating conditions, including enzyme and reactant doses and treatment time. In addition to altering the water absorption rate, internal sizing with the laccase–LG treatments was found to affect the mechanical and optical properties of the handsheets. As shown in this work, treatments based on laccase and a hydrophobic compound (particularly lauryl gallate), can provide a new, effective biotechnological method for the internal sizing of paper.
Àrees temàtiques de la UPC::Enginyeria paperera::Productes paperers::Altres manipulats del paper
Paper sizing
Paper--Surfaces
Hydrophobic surfaces
Encolatge del paper
Paper -- Superfícies
Paper -- Indústria i comerç -- Acabats
info:eu-repo/semantics/publishedVersion
Artículo
         

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