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The effect of charge density and hydrophobic modification on dextran-based paper strength enhancing polymers
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap.
2000 (engelsk)Inngår i: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 15, nr 5, s. 440-445Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The dry tensile strengths of bleached kraft pulp handsheets were measured as functions of the cationic charge density and hydrophobic substituents on 2 million Dalton dextran adsorbed onto the fibers before sheet making. The charge density controlled the maximum amount of dextran that could be adsorbed by the fibers which, in turn, influenced tensile strength. The lower the charge density, the higher were both the dextran adsorption capacity of fibers and the tensile strength of the resulting paper. Butanoic and hexanoic acid when condensed onto dextran gave hydrophobic domains which lowered paper strength linearly with hydrophobic content. An extension to the Page equation gave a semi-empirical model which predicted the major effects of hydrophobic substitution on paper strength.

sted, utgiver, år, opplag, sider
2000. Vol. 15, nr 5, s. 440-445
Emneord [en]
polymer compatibility, surface properties of fiber, tensile strength, page equation, strength enhancing polymer, dextran
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Identifikatorer
URN: urn:nbn:se:miun:diva-13535DOI: 10.3183/NPPRJ-2000-15-05-p440-445ISI: 000167751400016OAI: oai:DiVA.org:miun-13535DiVA, id: diva2:411072
Konferanse
Paper and Coating Chemistry Symposium 2000 Jun 06-08, 2000 Stockholm, Sweden
Merknad
Paper and Coating Chemistry Symposium 2000, Jun 06-08, 2000, Stockholm, SwedenTilgjengelig fra: 2011-04-15 Laget: 2011-04-15 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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