A new use for TCF pulp with a high hexenuronic acid content

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/20848

dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
dc.contributor	Universitat Politècnica de Catalunya. CELBIOTECH - Grup de Recerca: Enginyeria Paperera
dc.contributor.author	Valls Vidal, Cristina
dc.contributor.author	Roncero Vivero, María Blanca
dc.date	2013
dc.identifier.citation	Valls, C.; Roncero, M. A new use for TCF pulp with a high hexenuronic acid content. A: International Symposium on Wood, Fiber and Pulping Chemistry. "The 17th International Symposium on Wood, Fiber and Pulping Chemistry". Vancouver: 2013.
dc.identifier.uri	http://hdl.handle.net/2117/20848
dc.language.iso	eng
dc.relation	http://www.iswfpc.com/
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria paperera::Pasta paperera::Blanqueig de pastes
dc.subject	Àrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres::Fustes papereres
dc.subject	Wood-pulp--Bleaching
dc.subject	Wood--Chemistry
dc.subject	Antioxidant
dc.subject	Eucalyptus
dc.subject	Hexenuronic acids
dc.subject	Kappa number
dc.subject	TCF
dc.subject	Polpa de fusta -- Blanqueig
dc.subject	Paper -- Química
dc.title	A new use for TCF pulp with a high hexenuronic acid content
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	The importance of HexA groups lies on their influence on the bleaching process and the properties of the resulting pulp. In this work, various aspects of HexA were examined in order to elucidate their role in eucalyptus fibres. Thus, the contribution of HexA to kappa number in eucalyptus pulp was estimated to be 1.05 units per 10 μmol of HexA. Also, HexA changes during an ECF and a TCF sequence were examined in relation to lignin. Interesting results were found by comparing the boosting effect of xylanase and the impact of the alkaline stage in both sequences. The antioxidant activity of eucalyptus pulp with a variable HexA content was also measured. Although the presence of HexA in pulp has so far been deemed detrimental, HexA can have a favourable effect derived from their antioxidant ability. This property of HexA can be useful to obtain TCF paper for use in food packaging for easily oxidized products

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