Effect of ozone based TCF bleaching sequences on the optical and mechanical properties of secondary fibres of low mechanical pulp content

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στον ιστότοπο του αποθετηρίου του φορέα για περισσότερες πληροφορίες και για να δείτε όλα τα ψηφιακά αρχεία του τεκμηρίου*



Effect of ozone based TCF bleaching sequences on the optical and mechanical properties of secondary fibres of low mechanical pulp content (EN)

Economou, AM (EN)

journalArticle (EN)

2014-03-01T01:49:52Z
2000 (EN)


The application of totally chlorine-free (TCF) bleaching reagents to a heterogeneous wastepaper mixture consisting of unbleached krait pulp, with similar to 12% mechanical pulp, (incoming Kappa number 63) was studied. The TCF bleaching sequence stages were: acid treatment, low consistency (LC) oxygen delignification, high consistency (HC) oxygen delignification and ozone bleaching, as well as in situ produced dimethyldioxirane and hydrogen peroxide bleaching. Ozone consumption was limited to less than 1.3% to achieve as high as possible brightness improvement without fibre damage. Results presented in this paper suggest that a selected TCF bleaching sequence applied to the LC oxygen pulped wastepaper furnish, without wash-deinking, can produce a colour stripped, high brightness pulp (82.7% ISO at an overall yield of 75%), and showing only moderate colour reversion and tear index decrease. (EN)

Materials Science, Paper & Wood (EN)

ozone bleaching (EN)
CONSISTENCY (EN)
recycled fibres (EN)
TCF bleaching (EN)
DIMETHYLDIOXIRANE (EN)
KRAFT PULP (EN)

APPITA JOURNAL (EN)

Αγγλική γλώσσα

APPITA (EN)




*Η εύρυθμη και αδιάλειπτη λειτουργία των διαδικτυακών διευθύνσεων των συλλογών (ψηφιακό αρχείο, καρτέλα τεκμηρίου στο αποθετήριο) είναι αποκλειστική ευθύνη των αντίστοιχων Φορέων περιεχομένου.