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The effect of polysulphide pre-treatment and cooking parameters on the chemical properties and TCF bleachability of alkaline pulps
KTH, Superseded Departments, Pulp and Paper Technology.
2001 (English)In: Pulp & paper Canada, ISSN 0316-4004, Vol. 102, no 8, 44-48 p.Article in journal (Refereed) Published
Abstract [en]

The effect of pre-treating softwood chips with polysulphide on the chemical properties of the resulting pulp has been investigated. During subsequent pulping after such pre-treatment, high alkali content is maintained in the cooking liquor and, consequently, an unbleached pulp with a decreased amount of hexenuronic acid is obtained. As compared to other kraft pulps in this study, a polysulphide pre-treatment gives high cooking field, a high viscosity and brightness for the unbleached pulp and a pulp of good bleachability.

Place, publisher, year, edition, pages
2001. Vol. 102, no 8, 44-48 p.
Keyword [en]
softwoods, chips, pretreatment, alkaline pulps, pulp properties, chemical properties, polysulphides, kraft pulps, yield, viscosity, brightness, bleachability, bleached pulps, chlorine-free bleaching, hexeneuronic acid groups, hexenuronic acid, xylan, degradation, softwood
URN: urn:nbn:se:kth:diva-20918ISI: 000170731000009OAI: diva2:339615
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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