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Friction force measurements relevant to de-inking by means of atomic force microscope
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
2005 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 291, 361-368 p.Article in journal (Refereed)
Abstract [en]

In the pulping step of the de-inking process, the ink detaches from the fibres due to shear and physical chemical interaction. In order to get a better understanding of the forces involved between cellulose and ink, the atomic force microscope and the colloidal probe technique have been used in the presence of a model chemical dispersant (hexa-ethyleneglycol mono n-dodecyl ether, C12E6). A cellulose bead was used as the colloidal probe and three different lower surfaces have been used, an alkyd resin, mica and a cellulose sphere. The normal and lateral forces have been measured at a range of nonionic concentrations. It was found that the lateral sliding friction forces deceased with increasing surfactant concentration for both the alkyl resin and mica while no differences were observed for the cellulose surface. In addition, only a very small change in normal force could be detected for the alkyd surface as the concentration changed.

Place, publisher, year, edition, pages
2005. Vol. 291, 361-368 p.
Keyword [en]
De-inking, atomic force microscopy (AFM), colloidal probe, sliding friction, nonionic surfactant, C12E6
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26677OAI: oai:DiVA.org:ri-26677DiVA: diva2:1053680
Note
A1714Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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