Effect of primary fines and surface charge of hardwood pulps on AKD sizing

Yen Bach Truong, Wei Shen, Ian Parker

Research output: Contribution to journalArticleResearchpeer-review

18 Citations (Scopus)


This work examines the effect f primary fines and surface charge on sizing using four hardwood draft pulps, an unbleached eucalypt, a bleached eucalypt, a bleached birch and a bleached tropical hardwood pulp, with 0.1% AKD. The effect n sizing of the removal of fines (material passing 200 mesh) prior to sheet forming was also examined. The surface charges on the fibre components of the four pulps were similar but differences in fines content and in the surface charges on the fines resulted in significant differences in the surface charges on the whole pulps. The degree of sizing was similar for all sheets except those formed from tropical hardwood pulp fibres (fines free) and from the bleached birch pulp. The results are consistent with the degree of sizing being strongly influenced by surface charge but with the fines having an influence that is not simply related to their contribution to surface charge.

Original languageEnglish
Pages (from-to)30-34
Number of pages5
JournalAppita Journal
Issue number1
Publication statusPublished - 1 Jan 2003


  • Alkyl ketene dimer
  • Contact angle
  • Hardwod kraft pulp
  • Primary fines
  • Sizing
  • Surface charge

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