Fiber orientation and flow properties of pulp fiber suspensions under shear flow conditions

Bo Chen, Daisuke Tatsumi, Takayoshi Matsumoto

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The rheological properties of mixed pulp fiber suspensions were measured with a parallel-plates type rheometer. The effects of shear rate and mixture ratios of softwood and hardwood kraft pulp fibers on flocculation of the fibers were evaluated using a high speed CCD camera. The flow curves of the suspensions showed individual three zones derived from different flocculation conditions of the systems. The effect of the long fibers on the flocculation is more remarkable than the short ones. The two-dimensional fast Fourier transform technique was used to analyze the fiber orientation in polar coordinate. The fiber orientation in flow direction is rather irregular, even under high shear rate conditions. The present method is useful for evaluating the flow behavior of the fiber suspensions and the fiber orientation.

Original languageEnglish
Pages (from-to)471-478
Number of pages8
JournalJournal of Fiber Science and Technology
Volume59
Issue number12
DOIs
Publication statusPublished - Jan 1 2003
Externally publishedYes

Fingerprint

Shear flow
Fiber reinforced materials
Pulp
Suspensions
Flocculation
Fibers
Shear deformation
Kraft pulp
Softwoods
Hardwoods
High speed cameras
Rheometers
CCD cameras
Fast Fourier transforms

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • Polymers and Plastics
  • Industrial and Manufacturing Engineering

Cite this

Fiber orientation and flow properties of pulp fiber suspensions under shear flow conditions. / Chen, Bo; Tatsumi, Daisuke; Matsumoto, Takayoshi.

In: Journal of Fiber Science and Technology, Vol. 59, No. 12, 01.01.2003, p. 471-478.

Research output: Contribution to journalArticle

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