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Smooth model surfaces from lignin derivatives: I. Preparation and characterization
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.ORCID iD: 0000-0003-3407-7973
Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australia.
Department of Fiber and Polymer Technology, Royal Institute of Technology, Stockholm.
Department of Fiber and Polymer Technology, Royal Institute of Technology, Stockholm.
Responsible organisation
2006 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 22, no 3, 1209-1214 p.Article in journal (Refereed) Published
Abstract [en]

Lignin model surfaces were prepared from aqueous alkaline solutions by spin-coating on silica wafers. Films of thicknesses between 20 and 140 nm were easily made by variations in the spinning rate or in the lignin concentration. The roughnesses of the lignin surfaces were relatively low, approximately 1.1 nm (rms) on an area of 25 μm2, as determined by atomic force microscopy imaging. The stability of the lignin films in aqueous solutions was found to be excellent. No changes in the thickness of model surfaces immersed in slightly alkaline solutions (pH 9.2) could be detected even after 5 h soaking. A 10 percent reduction in the thickness of the lignin film was observed after 5 h of exposure to a solution containing 0. M NaCl. This novel preparation method opens great possibilities for further fundamental studies, where interactions between lignin and other substances are of interest to investigate.

Place, publisher, year, edition, pages
2006. Vol. 22, no 3, 1209-1214 p.
Keyword [en]
lignin, model surfaces, spin-coating, afm, ellipsometry
National Category
Chemical Engineering Chemical Sciences
Identifiers
URN: urn:nbn:se:miun:diva-5172DOI: 10.1021/la052284cISI: 000235068100052PubMedID: 16430285Scopus ID: 2-s2.0-33344462578Local ID: 4835OAI: oai:DiVA.org:miun-5172DiVA: diva2:30204
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2016-09-27Bibliographically approved

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CiteExportLink to record
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Citation style
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