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Evaluating the Pote...
Evaluating the Potential to Modify Pulp and Paper Properties through Oxygen Delignification
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- Esteves, Cláudia S. V. G., 1989- (författare)
- RISE,RISE INNVENTIA AB, Drottning Kristinas väg 61, SE-114 28 Stockholm, Sweden
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- Brännvall, Elisabet, 1961- (författare)
- RISE,Massa, papper och förpackningar,RISE INNVENTIA AB, Drottning Kristinas väg 61, SE-114 28 Stockholm, Sweden
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- Östlund, Sören, 1961- (författare)
- KTH,Hållfasthetslära,KTH Royal Institute of Technology, Sweden
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- Sevastyanova, Olena (författare)
- KTH,Fiber- och polymerteknologi,KTH Royal Institute of Technology, Sweden
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(creator_code:org_t)
- 2020-06-08
- 2020
- Engelska.
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Ingår i: ACS Omega. - : American Chemical Society (ACS). - 2470-1343. ; 5:23, s. 13703-13711
- Relaterad länk:
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https://doi.org/10.1...
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https://pubs.acs.org...
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https://kth.diva-por... (primary) (Raw object)
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https://pubs.acs.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The potential to modify pulp and paper properties by oxygen delignification was assessed by looking beyond the ordinary purpose of oxygen delignification. Pulps with the same kappa number were obtained by both pulping and the combination of pulping and oxygen delignification, and the mechanical and chemical properties were compared. The oxidation of pulp components leads to an increase in carboxylic acid groups in the fibers, resulting in a large influence on fiber swelling, seen as an increase in the water retention value and fiber saturation point. The introduction of charged groups appears to replace some of the morphological changes caused by refining and enhance the strength of fiber–fiber joints, generating pulps with better refinability and higher tensile strength. Oxygen delignification was able to improve the tensile index with 6% at the same sheet density and less refining energy, when the amount of total fiber charges was higher than 140 μekv/g.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Nyckelord
- oxygen delignification
- curl index
- fiber charges
- tensile index
- swelling
- Chemical Engineering
- Kemiteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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