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The role of xylan and glucomannan in yellowing of kraft pulps.
Vise andre og tillknytning
1995 (engelsk)Inngår i: Proceedings 8th Int. Symp. Wood Pulp. Chem., 1995, s. 43-48Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The effects of xylan and glucomannan on the thermal stability of unbleached, partially bleached, and fully bleached pine and birch kraft pulps were studied.  The choice of bleaching chems. strongly affected the brightness reversion.  Compared with hydrogen peroxide or chlorine dioxide, bleaching with ozone reduced the amt. of carboxyl groups and subsequently the pc-nos. of oxygen-delignified pulps.  Xylan removal reduced also the amt. of carboxyl groups in the pulps and this was reflected in improved brightness stability whereas glucomannan removal had no effect.  Thus, the uronic acids bound to pulp xylan were found to participate in the brightness reversion of kraft pulps.

sted, utgiver, år, opplag, sider
1995. s. 43-48
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-79826OAI: oai:DiVA.org:kth-79826DiVA, id: diva2:497948
Konferanse
International Symposium on Wood and Pulping Chemistry, 8th, Helsinki, June 6-9, 1995 (1995), 3, 43-48.
Merknad
NR 20140805Tilgjengelig fra: 2012-02-11 Laget: 2012-02-09 Sist oppdatert: 2012-02-11bibliografisk kontrollert

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