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Functionalization and patterning of nanocellulose films by surface-bound nanoparticles of hydrolyzable tannins and multivalent metal ions
Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, SE-10691 Stockholm, Sweden;Royal Inst Thchnol, Wallenberg Wood Sci Ctr, SE-10044 Stockholm, Sweden;Indian Inst Sci Educ & Res, Dept Phys, Berhampur 760010, Odisha, India.
Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, SE-10691 Stockholm, Sweden;Royal Inst Thchnol, Wallenberg Wood Sci Ctr, SE-10044 Stockholm, Sweden.ORCID iD: 0000-0003-0238-1639
Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, SE-10691 Stockholm, Sweden.ORCID iD: 0000-0002-3737-5303
Royal Inst Thchnol, Wallenberg Wood Sci Ctr, SE-10044 Stockholm, Sweden.
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2019 (English)In: Nanoscale, ISSN 2040-3364, E-ISSN 2040-3372, Vol. 11, no 41, p. 19278-19284Article in journal (Refereed) Published
Abstract [en]

Inspired by the Bogolanfini dyeing technique, we report how flexible nanofibrillated cellulose (CNF) films can be functionalized and patterned by surface-bound nanoparticles of hydrolyzable tannins and multivalent metal ions with tunable colors. Molecular dynamics simulations show that gallic acid (GA) and ellagic acid (EA) rapidly adsorb and assemble on the CNF surface, and atomic force microscopy confirms that nanosized GA assemblies cover the surface of the CNF. CNF films were patterned with tannin-metal ion nanoparticles by an in-fibre reaction between the pre-impregnated tannin and the metal ions in the printing ink. Spectroscopic studies show that the Fe-III/II ions interact with GA and form surface-bound, stable GA-Fe-III/II nanoparticles. The functionalization and patterning of CNF films with metal ion-hydrolyzable tannin nanoparticles is a versatile route to functionalize films based on renewable materials and of interest for biomedical and environmental applications.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY , 2019. Vol. 11, no 41, p. 19278-19284
National Category
Materials Chemistry
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URN: urn:nbn:se:uu:diva-400056DOI: 10.1039/c9nr04142gISI: 000498821300022PubMedID: 31312823OAI: oai:DiVA.org:uu-400056DiVA, id: diva2:1380070
Funder
Swedish Research Council, 348-2012-6185Swedish Research Council Formas, 942-2015-1032Available from: 2019-12-18 Created: 2019-12-18 Last updated: 2019-12-18Bibliographically approved

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