Effect of interfibrillar PVA bridging on water stability and mechanical properties of TEMPO/NaClO2 oxidized cellulosic nanofibril films

Minna Hakalahti, Arto Salminen, Jukka Seppälä, Tekla Tammelin, Tuomas Hänninen

    Research output: Contribution to journalArticleScientificpeer-review

    22 Citations (Scopus)

    Abstract

    TEMPO/NaClO2 oxidized cellulosic nanofibrils (TCNF) were covalently bonded with poly(vinyl alcohol) (PVA) to render water stable films. Pure TCNF films and TCNF-PVA films in dry state showed similar humidity dependent behavior in the elastic region. However, in wet films PVA had a significant effect on stability and mechanical characteristics of the films. When soaked in water, pure TCNF films exhibited strong swelling behavior and poor wet strength, whereas covalently bridged TCNF-PVA composite films remained intact and could easily be handled even after 24 h of soaking. Wet tensile strength of the films was considerably enhanced with only 10 wt% PVA addition. At 25% PVA concentration wet tensile strengths were decreased and films were more yielding. This behavior is attributed to the ability of PVA to reinforce and plasticize TCNF-based films. The developed approach is a simple and straightforward method to produce TCNF films that are stable in wet conditions.
    Original languageEnglish
    Pages (from-to)78-82
    JournalCarbohydrate Polymers
    Volume126
    DOIs
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Mechanical properties
    Water
    Tensile strength
    TEMPO
    Composite films
    Swelling
    Atmospheric humidity
    Alcohols

    Keywords

    • TEMPO oxidized cellulose nanofibrils
    • film
    • poly(vinyl alcohol)
    • water stable
    • mechnaical properties

    Cite this

    @article{6fef41d96d184b2498ec76bdbf939437,
    title = "Effect of interfibrillar PVA bridging on water stability and mechanical properties of TEMPO/NaClO2 oxidized cellulosic nanofibril films",
    abstract = "TEMPO/NaClO2 oxidized cellulosic nanofibrils (TCNF) were covalently bonded with poly(vinyl alcohol) (PVA) to render water stable films. Pure TCNF films and TCNF-PVA films in dry state showed similar humidity dependent behavior in the elastic region. However, in wet films PVA had a significant effect on stability and mechanical characteristics of the films. When soaked in water, pure TCNF films exhibited strong swelling behavior and poor wet strength, whereas covalently bridged TCNF-PVA composite films remained intact and could easily be handled even after 24 h of soaking. Wet tensile strength of the films was considerably enhanced with only 10 wt{\%} PVA addition. At 25{\%} PVA concentration wet tensile strengths were decreased and films were more yielding. This behavior is attributed to the ability of PVA to reinforce and plasticize TCNF-based films. The developed approach is a simple and straightforward method to produce TCNF films that are stable in wet conditions.",
    keywords = "TEMPO oxidized cellulose nanofibrils, film, poly(vinyl alcohol), water stable, mechnaical properties",
    author = "Minna Hakalahti and Arto Salminen and Jukka Sepp{\"a}l{\"a} and Tekla Tammelin and Tuomas H{\"a}nninen",
    note = "SDA: SHP: Bioeconomy",
    year = "2015",
    doi = "10.1016/j.carbpol.2015.03.007",
    language = "English",
    volume = "126",
    pages = "78--82",
    journal = "Carbohydrate Polymers",
    issn = "0144-8617",
    publisher = "Elsevier",

    }

    Effect of interfibrillar PVA bridging on water stability and mechanical properties of TEMPO/NaClO2 oxidized cellulosic nanofibril films. / Hakalahti, Minna; Salminen, Arto; Seppälä, Jukka; Tammelin, Tekla; Hänninen, Tuomas.

    In: Carbohydrate Polymers, Vol. 126, 2015, p. 78-82.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Effect of interfibrillar PVA bridging on water stability and mechanical properties of TEMPO/NaClO2 oxidized cellulosic nanofibril films

    AU - Hakalahti, Minna

    AU - Salminen, Arto

    AU - Seppälä, Jukka

    AU - Tammelin, Tekla

    AU - Hänninen, Tuomas

    N1 - SDA: SHP: Bioeconomy

    PY - 2015

    Y1 - 2015

    N2 - TEMPO/NaClO2 oxidized cellulosic nanofibrils (TCNF) were covalently bonded with poly(vinyl alcohol) (PVA) to render water stable films. Pure TCNF films and TCNF-PVA films in dry state showed similar humidity dependent behavior in the elastic region. However, in wet films PVA had a significant effect on stability and mechanical characteristics of the films. When soaked in water, pure TCNF films exhibited strong swelling behavior and poor wet strength, whereas covalently bridged TCNF-PVA composite films remained intact and could easily be handled even after 24 h of soaking. Wet tensile strength of the films was considerably enhanced with only 10 wt% PVA addition. At 25% PVA concentration wet tensile strengths were decreased and films were more yielding. This behavior is attributed to the ability of PVA to reinforce and plasticize TCNF-based films. The developed approach is a simple and straightforward method to produce TCNF films that are stable in wet conditions.

    AB - TEMPO/NaClO2 oxidized cellulosic nanofibrils (TCNF) were covalently bonded with poly(vinyl alcohol) (PVA) to render water stable films. Pure TCNF films and TCNF-PVA films in dry state showed similar humidity dependent behavior in the elastic region. However, in wet films PVA had a significant effect on stability and mechanical characteristics of the films. When soaked in water, pure TCNF films exhibited strong swelling behavior and poor wet strength, whereas covalently bridged TCNF-PVA composite films remained intact and could easily be handled even after 24 h of soaking. Wet tensile strength of the films was considerably enhanced with only 10 wt% PVA addition. At 25% PVA concentration wet tensile strengths were decreased and films were more yielding. This behavior is attributed to the ability of PVA to reinforce and plasticize TCNF-based films. The developed approach is a simple and straightforward method to produce TCNF films that are stable in wet conditions.

    KW - TEMPO oxidized cellulose nanofibrils

    KW - film

    KW - poly(vinyl alcohol)

    KW - water stable

    KW - mechnaical properties

    U2 - 10.1016/j.carbpol.2015.03.007

    DO - 10.1016/j.carbpol.2015.03.007

    M3 - Article

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    SP - 78

    EP - 82

    JO - Carbohydrate Polymers

    JF - Carbohydrate Polymers

    SN - 0144-8617

    ER -