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Interactions among components in the primary cell wall of Norway spruce (Picea Abies (L.) Karst.): Effect of a low sulphonation pretreatment
RISE, STFI-Packforsk.
RISE, STFI-Packforsk.
2008 (English)In: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 34, no 2, 107-112 p.Article in journal (Refereed) Published
Abstract [en]

Dynamic Fourier Transform Infra-Red (FT-IR) spectroscopy was used to examine the effect of a low sulphonation treatment on the ultrastructure of the primary cell wall of spruce wood. Sheets made from enriched primary cell wall material coming from a low sulphonated thermomechanical pulp were used for studying the viscoelastic response of the polymers using dynamic FT-IR spectroscopy. The overall ultrastructure of the primary cell wall remained largely unaltered, due to the exceptionally low degree of sulphonation used. However, an increased softening of the material as well as a weakening of the lignin;pectin, lignin;protein and pectin;protein interactions were observed. The suggestion is that, together with a structural modification of the lignin, it is the increased viscoelasticity of the material, resulting from the breaking down of the interactions among the polymers, that is the cause for the lower energy demand, when refining correspondingly low sulphonated chips.

Place, publisher, year, edition, pages
2008. Vol. 34, no 2, 107-112 p.
Keyword [en]
Chips, Dynamic FT-IR spectroscopy, Energy consumption, Interaction, Norway spruce, Picea Abies (L.) Karst, Polymers, Pretreatment, Primary cell wall, Sodium sulphite, Sulphonation
National Category
Wood Science Organic Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-29699ScopusID: 2-s2.0-56549112590OAI: oai:DiVA.org:ri-29699DiVA: diva2:1105143
Note

cited By 1

Available from: 2017-06-02 Created: 2017-06-02 Last updated: 2017-06-09Bibliographically approved

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