A Comparative study of fibrillated fibers from different mechanical and chemical pulps

Panu Lahtinen (Corresponding Author), Sari Liukkonen, Jaakko Pere, Asko Sneck, Heli Kangas

Research output: Contribution to journalArticleScientificpeer-review

49 Citations (Scopus)

Abstract

Fibrillation of chemical and mechanical pulps with different lignin contents was studied. The pulps were ion exchanged into their sodium form prior to fibrillation and fibrillated with an increasing level of energy using high-shear friction grinding. The fibrillated samples were characterized for their chemical composition, morphology, rheological properties, and water retention capacity. All pulps had a distinct tendency to form fibrillated material under high shear and compression. The lignin-containing kraft pulps fibrillated easily, and the resulting material can be utilized in applications where high viscosity, water retention capacity, and reinforcement are desired. Fibrillation of mechanical pulps resulted in more heterogeneous samples, which included fiber fragments, branched fibrillar structures, and flake-like particles. This material showed relatively low viscosity and water retention capacity when compared to the samples made from kraft pulps. Chemi-thermomechanical pulp (CTMP), when used as the raw material, yielded a more homogeneous organic filler-like material than did thermomechanical pulp (TMP)
Original languageEnglish
Pages (from-to)2115-2127
Number of pages13
JournalBioResources
Volume9
Issue number2
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Keywords

  • Bleached pulp
  • Chemi-thermomechanical pulp (CTMP)
  • Fibrillation
  • Grinding
  • Kraft pulp
  • Thermomechanical pulp (TMP)
  • Unbleached pulp

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