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 article in proceedingsScientificpeer-review


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 of the PPPS2020 seminar
EditorsJarmo Kouko, Jani Lehto, Tero Tuovinen
PublisherVTT Technical Research Centre of Finland
ISBN (Electronic)978-951-38-8736-0
ISBN (Print)978-951-38-8738-4
Publication statusPublished - 1 Sept 2020
MoE publication typeA4 Article in a conference publication
EventProgress in Paper Physics Seminar, PPPS 2020 - Jyväskylä, Finland
Duration: 1 Sept 20203 Sept 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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