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A new procedure for the hydrophobization of cellulose fibre using laccase and a hydrophobic phenolic compound
García Ubasart, Jordi; Colom Pastor, José F.; Vila Babarro, Carlos; Hernández, Núria; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
A new biotechnological procedure using laccase in combination with a hydrophobic phenolic compound (lauryl gallate) for the hydrophobization of cellulose fibres and internal sizing of paper was developed. Cellulose fibres from hardwood kraft pulp were incubated with laccase (Lac), in combination with lauryl gallate (LG). The Lac-LG treatment resulted in the internal sizing of paper, and also in significantly reduced water penetration in the handsheets and wettability of the paper surface. Paper was found not to be effectively rendered hydrophobic by LG alone. SEM images of the fibre network revealed the presence of the sizing agent: a product of the reaction between laccase and lauryl gallate. Binding of lauryl gallate to cellulose fibres was suggested by the increase in kappa number of the pulp and further confirmed by IR spectroscopy
2012-09-06
Àrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres::Cel·lulosa
Àrees temàtiques de la UPC::Enginyeria paperera::Pasta paperera
Paper industry -- Technological innovations
Paper industry -- Research
Papermaking
Pulping
Cellulose fiber
Hydrophobization
Internal sizing
Laccase
Lauryl gallate
Paper -- Fabricació -- Química
Pasta de paper -- Absorció i adsorció
Restricted access - publisher's policy
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