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Multilayers of cellulose derivatives and chitosan on nanofibrillated cellulose
Aalto University School of Chemical Technology, Department of Forest Products Technology, Aalto, Finland.
Umeå University, Faculty of Science and Technology, Department of Chemistry. Aalto University School of Chemical Technology, Department of Forest Products Technology, Aalto, Finland.
Aalto University School of Chemical Technology, Department of Forest Products Technology, Aalto, Finland.
Aalto University School of Chemical Technology, Department of Forest Products Technology, Aalto, Finland.
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2014 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 108, 34-40 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this work was to study the effect of solution conditions and polysaccharide structure on their Layer-by-Layer (LbL) deposition on nanofibrillated cellulose (NFC). Multilayer build-up of cellulose derivatives and chitosan on NFC model surfaces was studied using Quartz Crystal Microbalance with Dissipation (QCM-D) and Colloidal Probe Microscopy (CPM). The type of cationic polysaccharide was found to significantly affect the multilayer build-up and surface interactions. Cationic cellulose derivative quaternized hydroxyethyl cellulose ethoxylate (HECE) formed highly water-swollen layers with carboxymethyl cellulose (CMC), and the build-up was markedly influenced by both the ionic strength and pH. The ionic strength did not significantly influence the multilayer build-up of chitosan–CMC system, and adsorbed chitosan layers decreased the viscoelasticity of the system. Based on the results, it was also confirmed that electrostatic interaction is not the only driving force in case of the build-up of polysaccharide multilayers on nanofibrillated cellulose.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 108, 34-40 p.
Keyword [en]
polysaccharide, Layer-by-Layer, nanofibrillated cellulose, chitosan, colloidal probe microscopy
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-87817DOI: 10.1016/j.carbpol.2014.02.061OAI: oai:DiVA.org:umu-87817DiVA: diva2:711629
Available from: 2014-04-10 Created: 2014-04-10 Last updated: 2017-12-05Bibliographically approved

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CiteExportLink to record
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