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Effect of capillary condensation on friction force and adhesion
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
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2007 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 23, no 2, 517-522 p.Article in journal (Refereed)
Abstract [en]

Friction force measurements have been conducted with a colloid probe on mica and silica (both hydrophilic and hydrophobised) after long (24 hour) exposure to high humidity air. Adhesion and friction measurements have also been performed on cellulose substrates. The long exposure to high humidity led to a large hysteresis between loading and unloading in the friction measurements with separation occurring at large negative applied loads. The large hysteresis in the friction-load relationship is attributed to a contact area hysteresis of the capillary condensate which built up during loading and did not evaporate during the unloading regime. The magnitude of the friction force varied dramatically between substrates and was lowest on the mica substrate and highest on the hydrophilic silica substrate with the hydrophobised silica and cellulose being intermediate. The adhesion due to capillary forces on cellulose was small compared to that on the other substrates, due to the greater roughness of these surfaces.

Place, publisher, year, edition, pages
2007. Vol. 23, no 2, 517-522 p.
Keyword [en]
Friction, capillary condensation, cellulose, mica, silica, atomic force microscopy, AFM, surface force, adhesion, paper, humidity, colloid probe, nanotribology.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27138OAI: oai:DiVA.org:ri-27138DiVA: diva2:1054142
Note
A1795Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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