Startseite Characterization of dissolving pulp by fibre swelling in dilute cupriethylenediamine (CUEN) solution in a MorFi analyser
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Characterization of dissolving pulp by fibre swelling in dilute cupriethylenediamine (CUEN) solution in a MorFi analyser

  • Benoît Arnoul-Jarriault EMAIL logo , Raphaël Passas , Dominique Lachenal und Christine Chirat
Veröffentlicht/Copyright: 22. Januar 2016
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Abstract

The swelling of dissolving pulps has been investigated by a new method based on the MorfiR analyser, which is measuring the width variation of thousands of fibres in a cupriethylenediamine (CUEN) solution in a few minutes. Pulps from various origins were analysed coming from softwood, birch wood, eucalyptus wood, kraft pulps, sulphite pulps and ECF and TCF bleached pulps, which were modified by several treatments including chemical (cold caustic extraction, hypochlorite) or enzymatic (cellulase) methods. The swelling was much affected by the crystalline form of cellulose and the hemicellulose content but did not depend neither on the cellulose DP nor on the fibre structure (hardwood vs. softwood). The dissolving pulp reactivity in the viscose process was also assessed by swelling in dilute solutions of cupriethylenediamine (CUEN) instead of the Fock’s method.


Corresponding author: Benoît Arnoul-Jarriault, Laboratoire de Génie des Procédés Papetiers(LGP2), Grenoble-INP Pagora, CS10065, 38402 Saint-Martin-d’Hères Cedex, France, Phone: +33 4 76 82 69 74, e-mail:

Acknowledgements

This work has been conducted in the framework of the “Polywood project” financed by French R&D national Agencies. The authors thank Pr.Evtuguin from Aveiro University and the company Caïma for assistance in the Fock’s Test measurement.

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Received: 2015-7-27
Accepted: 2015-11-5
Published Online: 2016-1-22
Published in Print: 2016-7-1

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