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
Condensation reactions of lignin during birch Kraft pulping as studied by thioacidolysis
KTH, Tidigare Institutioner, Pappers- och massateknik.
KTH, Tidigare Institutioner, Pappers- och massateknik.
KTH, Tidigare Institutioner, Fiber- och polymerteknologi.ORCID-id: 0000-0002-2900-4713
2004 (engelsk)Inngår i: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 30, nr 12, s. 317-322Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The influences of kappa number and ionic strength during birch kraft cooking on the extent of lignin condensation have been studied using thioacidolysis and size exclusion chromatography. Thioacidolysis degrades alkyl-aryl ether bonds in lignin while leaving carbon-carbon and diaryl-ether bonds relatively intact. Therefore, the lignin structures not cleaved during thioacidolysis can be considered as relatively stable and may account,, for example,for the slow residual phase delignification in the kraft cook and for differences in bleachability. It was shown that condensed lignin structures are formed in the residual lignin during birch kraft cooking. The relative amount of such structures increased with decreasing kappa number or with increasing sodium ion concentration in the cook. These structures were also found in a xylan-lignin complex isolated from a birch kraft pulp. The condensed structures were only partly reactive during oxygen delignification.

sted, utgiver, år, opplag, sider
2004. Vol. 30, nr 12, s. 317-322
Emneord [en]
bleachability, brightness, cooking, bonds
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-24016ISI: 000227481000001Scopus ID: 2-s2.0-25844455214OAI: oai:DiVA.org:kth-24016DiVA, id: diva2:342715
Merknad
QC 20100525 QC 20110922Tilgjengelig fra: 2010-08-10 Laget: 2010-08-10 Sist oppdatert: 2017-12-12bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Scopus

Personposter BETA

Lindström, Mikael

Søk i DiVA

Av forfatter/redaktør
Axelsson, PatrikGellerstedt, GöranLindström, Mikael
Av organisasjonen
I samme tidsskrift
Journal of Pulp and Paper Science (JPPS)

Søk utenfor DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric

urn-nbn
Totalt: 1321 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