Modified nanofibrillated cellulose-polyvinyl alcohol films with improved mechanical performance

Sanna Virtanen, Jari Vartianen, Harri Setälä, Tekla Tammelin, Sauli Vuoti

    Research output: Contribution to journalArticleScientificpeer-review

    48 Citations (Scopus)

    Abstract

    In this study chemically surface-modified nanofibrillated cellulose (NFC) was used at low levels (0.5 to 3 wt%) as reinforcement in a polyvinyl alcohol (PVA) matrix. The modified NFC-PVA films prepared by a solution casting technique showed improved mechanical performance and good optical properties. NFC was allylated and further epoxidised with hydrogen peroxide. The addition of 1 wt% epoxy-NFC enhanced the modulus and strength of the pure PVA film, 474% and 224%, respectively. This composite film exhibited visible light transmittance of 83%. The results also showed that 1 wt% epoxy-NFC loading was beneficial to improve the crystallinity of PVA. SEM characterization confirmed better dispersion of modified NFC within the PVA matrix compared to unmodified NFC. The result showed the favourable effect of chemically modified NFC on the mechanical properties of PVA compared to unmodified NFC as reinforcement.

    Original languageEnglish
    Pages (from-to)11343-11350
    Number of pages8
    JournalRSC Advances
    Volume4
    Issue number22
    DOIs
    Publication statusPublished - 28 Feb 2014
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Polyvinyl Alcohol
    Polyvinyl alcohols
    Cellulose
    Reinforcement
    Composite films
    Hydrogen peroxide
    Hydrogen Peroxide
    Casting
    Optical properties
    Mechanical properties
    Scanning electron microscopy

    Keywords

    • cellulose

    Cite this

    Virtanen, Sanna ; Vartianen, Jari ; Setälä, Harri ; Tammelin, Tekla ; Vuoti, Sauli. / Modified nanofibrillated cellulose-polyvinyl alcohol films with improved mechanical performance. In: RSC Advances. 2014 ; Vol. 4, No. 22. pp. 11343-11350.
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    abstract = "In this study chemically surface-modified nanofibrillated cellulose (NFC) was used at low levels (0.5 to 3 wt{\%}) as reinforcement in a polyvinyl alcohol (PVA) matrix. The modified NFC-PVA films prepared by a solution casting technique showed improved mechanical performance and good optical properties. NFC was allylated and further epoxidised with hydrogen peroxide. The addition of 1 wt{\%} epoxy-NFC enhanced the modulus and strength of the pure PVA film, 474{\%} and 224{\%}, respectively. This composite film exhibited visible light transmittance of 83{\%}. The results also showed that 1 wt{\%} epoxy-NFC loading was beneficial to improve the crystallinity of PVA. SEM characterization confirmed better dispersion of modified NFC within the PVA matrix compared to unmodified NFC. The result showed the favourable effect of chemically modified NFC on the mechanical properties of PVA compared to unmodified NFC as reinforcement.",
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    Modified nanofibrillated cellulose-polyvinyl alcohol films with improved mechanical performance. / Virtanen, Sanna; Vartianen, Jari; Setälä, Harri; Tammelin, Tekla; Vuoti, Sauli.

    In: RSC Advances, Vol. 4, No. 22, 28.02.2014, p. 11343-11350.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Modified nanofibrillated cellulose-polyvinyl alcohol films with improved mechanical performance

    AU - Virtanen, Sanna

    AU - Vartianen, Jari

    AU - Setälä, Harri

    AU - Tammelin, Tekla

    AU - Vuoti, Sauli

    PY - 2014/2/28

    Y1 - 2014/2/28

    N2 - In this study chemically surface-modified nanofibrillated cellulose (NFC) was used at low levels (0.5 to 3 wt%) as reinforcement in a polyvinyl alcohol (PVA) matrix. The modified NFC-PVA films prepared by a solution casting technique showed improved mechanical performance and good optical properties. NFC was allylated and further epoxidised with hydrogen peroxide. The addition of 1 wt% epoxy-NFC enhanced the modulus and strength of the pure PVA film, 474% and 224%, respectively. This composite film exhibited visible light transmittance of 83%. The results also showed that 1 wt% epoxy-NFC loading was beneficial to improve the crystallinity of PVA. SEM characterization confirmed better dispersion of modified NFC within the PVA matrix compared to unmodified NFC. The result showed the favourable effect of chemically modified NFC on the mechanical properties of PVA compared to unmodified NFC as reinforcement.

    AB - In this study chemically surface-modified nanofibrillated cellulose (NFC) was used at low levels (0.5 to 3 wt%) as reinforcement in a polyvinyl alcohol (PVA) matrix. The modified NFC-PVA films prepared by a solution casting technique showed improved mechanical performance and good optical properties. NFC was allylated and further epoxidised with hydrogen peroxide. The addition of 1 wt% epoxy-NFC enhanced the modulus and strength of the pure PVA film, 474% and 224%, respectively. This composite film exhibited visible light transmittance of 83%. The results also showed that 1 wt% epoxy-NFC loading was beneficial to improve the crystallinity of PVA. SEM characterization confirmed better dispersion of modified NFC within the PVA matrix compared to unmodified NFC. The result showed the favourable effect of chemically modified NFC on the mechanical properties of PVA compared to unmodified NFC as reinforcement.

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