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

Economou, AM

dc.contributor.author	Economou, AM	en
dc.date.accessioned	2014-03-01T01:49:52Z
dc.date.available	2014-03-01T01:49:52Z
dc.date.issued	2000	en
dc.identifier.issn	1038-6807	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25944
dc.subject	TCF bleaching	en
dc.subject	recycled fibres	en
dc.subject	ozone bleaching	en
dc.subject.classification	Materials Science, Paper & Wood	en
dc.subject.other	KRAFT PULP	en
dc.subject.other	CONSISTENCY	en
dc.subject.other	DIMETHYLDIOXIRANE	en
dc.title	Effect of ozone based TCF bleaching sequences on the optical and mechanical properties of secondary fibres of low mechanical pulp content	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	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
heal.publisher	APPITA	en
heal.journalName	APPITA JOURNAL	en
dc.identifier.isi	ISI:000088503400019	en
dc.identifier.volume	53	en
dc.identifier.issue	4	en
dc.identifier.spage	312	en
dc.identifier.epage	317	en