Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Topochemical modification of fibres during kraft pulping
KTH, Skolan för kemivetenskap (CHE), Fiber- och polymerteknologi.
KTH, Skolan för kemivetenskap (CHE), Fiber- och polymerteknologi.ORCID-id: 0000-0002-2900-4713
2005 (engelsk)Inngår i: Appita Annu. Conf., 2005, s. 155-160Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Xylan dissolution, degradation and redeposition in the birch kraft cook have been examined. The molecular weight of the dissolved xylan was determined through gel permeation chromatography and the loss in molecular weight could be correlated to the amount of degraded xylan in the initial parts of the cook. This indicates that peeling is the only significant xylan degradation reaction early in the cook. Two different birch black liquors containing xylan with the molecular weight of 12.200 g/mol and 5.950 g/mol respectively, were added to softwood kraft cooks in order to determine the effect on pulp strength properties by birch xylan. The results show an increase in both tensile strength and tensile stiffness. The magnitude of the strength increase was affected very much by the molecular weight of xylan. High molecular weight xylan addition increased the tensile strength with more than 10% measured at 1000 PFI revolutions. The tensile stiffness was also increased by xylan addition, high molecular weight to a larger extent than low molecular weight.

sted, utgiver, år, opplag, sider
2005. s. 155-160
Serie
Appita Annual Conference, ISSN 1443-5454 ; 2
Emneord [en]
Dissolution, Gel permeation chromatography, Molecular weight, Tensile strength, Birch xylan, Kraft pulp, Dissolving, Kraft Pulping, Tensile Stress, Xylans
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-156514Scopus ID: 2-s2.0-29344466426OAI: oai:DiVA.org:kth-156514DiVA, id: diva2:767332
Konferanse
59th Appita Annual Conference and Exhibition, incorporating the 13th ISWFPC: International Symposium on Wood, Fibre and Pulping Chemistry, 16-19 May 2005, Auckland, New Zealand
Merknad

QC 20141201

Tilgjengelig fra: 2014-12-01 Laget: 2014-11-28 Sist oppdatert: 2015-10-29bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Scopus

Personposter BETA

Lindström, Mikael E.

Søk i DiVA

Av forfatter/redaktør
Danielsson, SverkerLindström, Mikael E.
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric

urn-nbn
Totalt: 327 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf