Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Effects of mechanical forces on strength delivery in softwood kraft cooking
RISE, Innventia.
RISE, Innventia.
2011 (English)In: Appita journal, ISSN 1038-6807, Vol. 64, no 1, p. 89-94Article in journal (Refereed) Published
Abstract [en]

Strength delivery of softwood chemical pulps has been previously studied extensively without being able to define the underlying morphological factors such as the initiation of weak points within the fibres. In this study an industrial kraft cooking process was simulated with the use of a laboratory batch digester and applying compression and shear forces to the chips during cooking. The results of cooks of pine, to kappa 30 and 45, were significantly affected when subjected to shearing forces during the last 15 minutes of the cook. The typical behaviour of a softwood industrial pulp viz. being more difficult to beat and having lower tear index at comparable tensile index around 90 Nm/g, when compared to a laboratory pulp produced from the same raw material, was obtained. The mechanically treated pulps also had substantially higher dewatering ability reflecting a more collapsed cell structure. Pure compression loading of chips during cooking did not induce these detrimental effects.

Place, publisher, year, edition, pages
2011. Vol. 64, no 1, p. 89-94
Keywords [en]
Chemical pulping, Chip, Compression, Shearing, Softwood, Strength properties, Yield
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-41712Scopus ID: 2-s2.0-84855418718OAI: oai:DiVA.org:ri-41712DiVA, id: diva2:1377673
Available from: 2019-12-12 Created: 2019-12-12 Last updated: 2019-12-16Bibliographically approved

Open Access in DiVA

No full text in DiVA

Scopus
By organisation
Innventia
In the same journal
Appita journal
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 2 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.9