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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.ORCID-id: 0000-0003-3534-1107
2008 (Engelska)Ingår i: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 34, nr 2, s. 107-112Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
2008. Vol. 34, nr 2, s. 107-112
Nyckelord [en]
Chips, Dynamic FT-IR spectroscopy, Energy consumption, Interaction, Norway spruce, Picea Abies (L.) Karst, Polymers, Pretreatment, Primary cell wall, Sodium sulphite, Sulphonation
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Trävetenskap Organisk kemi
Identifikatorer
URN: urn:nbn:se:ri:diva-29699Scopus ID: 2-s2.0-56549112590OAI: oai:DiVA.org:ri-29699DiVA, id: diva2:1105143
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Tillgänglig från: 2017-06-02 Skapad: 2017-06-02 Senast uppdaterad: 2018-08-21Bibliografiskt granskad

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