Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Evaluation of Kraft-PS Cooking for Eucalypt and Pine Wood Chip Mixtures
Univ Fed Vicosa, Dept Forestry Engn, Vicosa, MG, Brazil..
Univ Fed Vicosa, Dept Forestry Engn, Vicosa, MG, Brazil..
Univ Fed Vicosa, Dept Forestry Engn, Vicosa, MG, Brazil..
Univ Fed Vicosa, Dept Forestry Engn, Vicosa, MG, Brazil..
Visa övriga samt affilieringar
2019 (Engelska)Ingår i: Journal of wood chemistry and technology, ISSN 0277-3813, E-ISSN 1532-2319, Vol. 39, nr 3, s. 149-165Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The purpose of this study was evaluating polysulfides (PS) as additives in kraft cooking of wood mixtures eucalypt (E) and pine chips (P) wood mixtures, namely: 50E/50P, 70E/30P, and 90E/10P. Bleaching (O(D/A)(EP)D) and refining of pulps were also investigated. The PS addition (1.5 or 3.0%) to the kraft cooking preserved the hemicelluloses resulting increased pulp yield and reduced H-factor. The oxygen delignification was more efficient for chip mixtures containing higher proportion of pine chips, but was not largely affected by the addition of PS. The bleach chemical consumption was not significantly influenced by PS dosage or by the wood chip mixture. The burst and tear indexes were improved by increasing the proportion of pine chips to the mixture, but an opposite effect was observed for refinability, tensile index, and opacity. The kraft-PS pulps showed increased refinability, tensile, and burst strengths in relation the standard pulps, but lower opacities.

Ort, förlag, år, upplaga, sidor
TAYLOR & FRANCIS INC , 2019. Vol. 39, nr 3, s. 149-165
Nyckelord [en]
Eucalypt, pine, polysulfides charge, pulp chemistry, pulp strength
Nationell ämneskategori
Kemi
Identifikatorer
URN: urn:nbn:se:kth:diva-252616DOI: 10.1080/02773813.2018.1533979ISI: 000467859800001Scopus ID: 2-s2.0-85058788205OAI: oai:DiVA.org:kth-252616DiVA, id: diva2:1319628
Anmärkning

QC 20190603

Tillgänglig från: 2019-06-03 Skapad: 2019-06-03 Senast uppdaterad: 2019-06-03Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

de Carvalho, Danila Morais

Sök vidare i DiVA

Av författaren/redaktören
de Carvalho, Danila Morais
Av organisationen
Träkemi och massateknologi
I samma tidskrift
Journal of wood chemistry and technology
Kemi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 123 träffar
RefereraExporteraLänk till posten
Permanent länk

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