Do wet kraft fibres have a gel-like surface?

Annika Ketola, Miika Leppänen, Tuomas Turpeinen, Petri Papponen, Elias Retulainen

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


The mechanical properties of refined wet fibre surface was studied by assuming that the fibre surface is basically composed of micro- and nanofibrillated cellulose. The dynamic mechanical properties of microfibrillated cellulose show that already at consistencies below 2% it is clearly gel-like material. Comparison of wet fibre surface and CMF by using helium ion microscopy revealed their structural similarity and make possible to conclude that the fibre surface is gel-like material.
Original languageEnglish
Title of host publicationProgress in Paper Physics Seminar
Subtitle of host publicationAbstract book on the PPPS2020 Seminar on September 1-3, 2020 in Jyväskylä, Finland
EditorsJarmo Kouko, Jani Lehto, Tero Tuovinen
PublisherVTT Technical Research Centre of Finland
Number of pages4
ISBN (Electronic)978-951-38-8736-0
ISBN (Print)978-951-38-8738-4
Publication statusPublished - 1 Sep 2020
MoE publication typeNot Eligible
EventProgress in Paper Physics Seminar, PPPS 2020 - Jyväskylä, Finland
Duration: 1 Sep 20203 Sep 2020

Publication series

SeriesVTT Technology


SeminarProgress in Paper Physics Seminar, PPPS 2020
Abbreviated titlePPPS2020


  • fibre surface
  • gel-like layer
  • nanofibrillated cellulose
  • microfibrillated cellulose
  • helium ion microscope

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