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Enzymatic treatments of paper surface using laccase, hydrophobic compounds and lignin
Cusola Aumedes, Oriol; Roncero Vivero, María Blanca; García Ubasart, Jordi; Valls Vidal, Cristina
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera; Universitat Politècnica de Catalunya. CIPAGRAF - Grup de Recerca Paperer i Gràfic
This study demonstrates the potential of applying surface enzymatic treatments on finished paper sheets to improve their physical characteristics. Research studies have recently reported that is possible to internally size paper using enzymatic treatments, applied in mass. In the present work an innovative method for achieving enzymatic surface sizing on finished paper sheets is presented. A commercial filter paper and handmade eucalyptus sheets were surface sized with laccase derived from Trametes Villosa, Lauryl Gallate (LG) as hydrophobic compound, and soluble lignin. Moreover, this study shows the positive influence of sulfonated lignin since it acts as a dispersant, improving the homogeneous distribution of the LG along the paper sheet.
Àrees temàtiques de la UPC::Enginyeria paperera::Fabricació del paper
Cellulose fibers
Paper industry
Lignocellulose
Paper -- Fabricació -- Innovacions tecnològiques
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