Nanocellulose and chitosan based films as low cost, green piezoelectric materials

Aleksi Hänninen, Essi Sarlin, Inari Lyyra, Timo Salpavaara, Minna Kellomäki, Sampo Tuukkanen

    Research output: Contribution to journalArticleScientificpeer-review

    106 Citations (Scopus)


    Nanocellulose and chitosan have recently started to get attention as environmentally friendly piezoelectric materials for sensor and energy harvesting applications. Conversely, current commercially available flexible piezoelectric films made of for example polyvinylidene difluoride (PVDF) are relatively expensive and made from non-renewable materials. We measured the piezoelectric responses (2–8 pC/N) for solvent casted films based on nanocellulose, microcrystalline chitosan and their blends. In addition, the tensile properties of the piezoelectric films were characterized to find out if chitosan could be used to enhance the flexibility of the brittle nanocellulose films. Based on the results, plain chitosan is an interesting piezoelectric material itself. In addition, blending nanocellulose and chitosan could be a potential method for tailoring the properties of solvent casted low cost, green piezoelectric films.
    Original languageEnglish
    Pages (from-to)418-424
    Number of pages7
    JournalCarbohydrate Polymers
    Publication statusPublished - 2018
    Publication typeA1 Journal article-refereed


    • Chitosan
    • Nanocellulose
    • Piezoelectric sensitivity
    • Piezoelectricity
    • Solvent casting

    Publication forum classification

    • Publication forum level 2


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