Effect of spruce wood and fiber properties on pulp quality under varying defibration conditions

Annikki Heikkurinen, Mikael Lucander, Jari Sirviö, Antero Varhimo

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


The relationship between spruce wood fiber properties, on pulp properties, was investigated. Both fiber length and the cross-sectional dimensions of fibers were studied as a basis for the wood assortments. PGW and TMP processes were studied using normal defibration conditions. Moreover, the defibration conditions were varied using two refining intensities and different grinding temperatures.
The energy-freeness relationship for different raw materials hardly varied, but the pulp fiber properties were clearly affected by the wood fiber properties. In addition, the different wood assortments reacted in different ways to the changes in defibration conditions. Fast-growing thin-walled fibers seemed to develop better when defibrated by grinding than by refining, while the opposite was the case with thick-walled slow growth fibers.
Original languageEnglish
Title of host publicationTAPPI International Mechanical Pulping Conference, May 24-26, 1999, Houston, Texas, The Westin Galleria : proceedings
PublisherTAPPI Press
Number of pages24
ISBN (Print)0-89852-738-4
Publication statusPublished - 1999
MoE publication typeB3 Non-refereed article in conference proceedings


  • puu
  • ominaisuudet
  • mekaaninen massa
  • Picea abies
  • puukuidut


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