Clean and reactive nanostructured cellulose surface

M. Österberg (Corresponding Author), Soledad Peresin, L.-S. Johansson, Tekla Tammelin (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    15 Citations (Scopus)

    Abstract

    A simple, solvent-free and low cost method to activate the surface of nanofibrillated cellulose films for further functionalization is presented. The method is based on the oxidative properties of UV radiation and ozone, to effectively remove contaminants from nanocellulosic surface, which remains clean and reactive for at least a week. The efficiency of the method is demonstrated by X-ray photoelectron spectroscopy (XPS) and contact angle measurements. In clear contrast to previous results on nanoscaled cellulose the relative atomic concentration of non-cellulosic carbon atoms was only 4 %, and water completely wetted the surface within seconds. After activation, neither chemical degradation nor morphological changes on cellulose were observed. This surface activation is essential for further functionalization of the film in dry state or nonpolar media. The surface activation was confirmed by silylation and a four times higher degree of substitution was achieved on the activated sample compared to non-activated reference film, as monitored with XPS.
    Original languageEnglish
    Pages (from-to)983-990
    Number of pages8
    JournalCellulose
    Volume20
    Issue number3
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Cellulose
    Chemical activation
    X ray photoelectron spectroscopy
    Cellulose films
    Ozone
    Angle measurement
    Ultraviolet radiation
    Contact angle
    Substitution reactions
    Carbon
    Impurities
    Degradation
    Atoms
    Water
    Costs

    Keywords

    • cleaning
    • film
    • microfibrillated cellulose
    • ozonation
    • UV

    Cite this

    Österberg, M. ; Peresin, Soledad ; Johansson, L.-S. ; Tammelin, Tekla. / Clean and reactive nanostructured cellulose surface. In: Cellulose. 2013 ; Vol. 20, No. 3. pp. 983-990.
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    abstract = "A simple, solvent-free and low cost method to activate the surface of nanofibrillated cellulose films for further functionalization is presented. The method is based on the oxidative properties of UV radiation and ozone, to effectively remove contaminants from nanocellulosic surface, which remains clean and reactive for at least a week. The efficiency of the method is demonstrated by X-ray photoelectron spectroscopy (XPS) and contact angle measurements. In clear contrast to previous results on nanoscaled cellulose the relative atomic concentration of non-cellulosic carbon atoms was only 4 {\%}, and water completely wetted the surface within seconds. After activation, neither chemical degradation nor morphological changes on cellulose were observed. This surface activation is essential for further functionalization of the film in dry state or nonpolar media. The surface activation was confirmed by silylation and a four times higher degree of substitution was achieved on the activated sample compared to non-activated reference film, as monitored with XPS.",
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    Österberg, M, Peresin, S, Johansson, L-S & Tammelin, T 2013, 'Clean and reactive nanostructured cellulose surface', Cellulose, vol. 20, no. 3, pp. 983-990. https://doi.org/10.1007/s10570-013-9920-8

    Clean and reactive nanostructured cellulose surface. / Österberg, M. (Corresponding Author); Peresin, Soledad; Johansson, L.-S.; Tammelin, Tekla (Corresponding Author).

    In: Cellulose, Vol. 20, No. 3, 2013, p. 983-990.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Clean and reactive nanostructured cellulose surface

    AU - Österberg, M.

    AU - Peresin, Soledad

    AU - Johansson, L.-S.

    AU - Tammelin, Tekla

    PY - 2013

    Y1 - 2013

    N2 - A simple, solvent-free and low cost method to activate the surface of nanofibrillated cellulose films for further functionalization is presented. The method is based on the oxidative properties of UV radiation and ozone, to effectively remove contaminants from nanocellulosic surface, which remains clean and reactive for at least a week. The efficiency of the method is demonstrated by X-ray photoelectron spectroscopy (XPS) and contact angle measurements. In clear contrast to previous results on nanoscaled cellulose the relative atomic concentration of non-cellulosic carbon atoms was only 4 %, and water completely wetted the surface within seconds. After activation, neither chemical degradation nor morphological changes on cellulose were observed. This surface activation is essential for further functionalization of the film in dry state or nonpolar media. The surface activation was confirmed by silylation and a four times higher degree of substitution was achieved on the activated sample compared to non-activated reference film, as monitored with XPS.

    AB - A simple, solvent-free and low cost method to activate the surface of nanofibrillated cellulose films for further functionalization is presented. The method is based on the oxidative properties of UV radiation and ozone, to effectively remove contaminants from nanocellulosic surface, which remains clean and reactive for at least a week. The efficiency of the method is demonstrated by X-ray photoelectron spectroscopy (XPS) and contact angle measurements. In clear contrast to previous results on nanoscaled cellulose the relative atomic concentration of non-cellulosic carbon atoms was only 4 %, and water completely wetted the surface within seconds. After activation, neither chemical degradation nor morphological changes on cellulose were observed. This surface activation is essential for further functionalization of the film in dry state or nonpolar media. The surface activation was confirmed by silylation and a four times higher degree of substitution was achieved on the activated sample compared to non-activated reference film, as monitored with XPS.

    KW - cleaning

    KW - film

    KW - microfibrillated cellulose

    KW - ozonation

    KW - UV

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    DO - 10.1007/s10570-013-9920-8

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