Structural distinction due to deposition method in ultrathin films of cellulose nanofibres

Benjamin P. Wilson, Kirsi Yliniemi, Marie Gestranius, Minna Hakalahti, Matti Putkonen, Mari Lundström, Maarit Karppinen, Tekla Tammelin, Eero Kontturi (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    5 Citations (Scopus)

    Abstract

    This research explores fundamental, structural differences of ultrathin films, prepared with three distinct deposition methods using 2,2,6,6-tetramethyl-piperidin-1-oxyl radical oxidized cellulose nanofibres (TEMPO-CNFs) derived from never dried bleached birch pulp. There is standard characterization by atomic force microscopy (morphology, roughness) and ellipsometry (thickness) and important structural data is gained by exposing the films to water vapor and monitoring the vapor uptake with quartz crystal microbalance (QCM). Significant distinctions were found from QCM data that could be linked to the structure of the films, originating from the three deposition methods: adsorption, spin coating and electrophoretic deposition. Moreover, the results shown here have potential implications for various types of films that comprise of amphiphilic nanomaterials that have a distinct response to moisture or aqueous based solutions.

    Original languageEnglish
    Pages (from-to)1715-1724
    Number of pages10
    JournalCellulose
    Volume25
    Issue number3
    DOIs
    Publication statusPublished - 1 Mar 2018
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Electrophoretic deposition
    • Humidity response
    • TEMPO-oxidised nanofibrillated cellulose
    • Ultrathin films
    • Water uptake

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