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Mechano-sorptive creep in pulp fibres and paper
RISE, Innventia.
RISE, Innventia.
2014 (English)In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225, Vol. 48, no 3, p. 569-580Article in journal (Refereed) Published
Abstract [en]

The factors affecting mechano-sorptive creep of wood and paper have been investigated for a long time. It has also been argued that single wood fibres do not exhibit mechano-sorptive creep and that the reasons for the accelerated creep under moisture cycling conditions instead are related to the bonds between the fibres. In order to examine the relevance of this argument, measurements on single pulp fibres of different composition were performed in tension, and the mechano-sorptive creep was compared to that of papers made from the same source of pulp fibres. All fibres tested were found to exhibit an increased creep rate during moisture cycling as compared to constant humidity conditions. Thus, pulp fibres show mechano-sorptive creep and in this sense behave similar to solid wood or paper products made thereof. A linear relation between the creep strain rate during cyclic humidity and the creep strain rate at a constant humidity was also noted for both fibres and paper. This relation was not affected by changes in hemicelluloses content or composition, neither for fibres nor for papers made of these fibres. However, in all cases, papers showed a much higher mechano-sorptive creep than the corresponding fibres they were made of.

Place, publisher, year, edition, pages
2014. Vol. 48, no 3, p. 569-580
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:ri:diva-9843DOI: 10.1007/s00226-014-0624-5Scopus ID: 2-s2.0-84900513992OAI: oai:DiVA.org:ri-9843DiVA, id: diva2:968629
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2020-12-01Bibliographically approved

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