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

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Pages (from-to)418-424
Number of pages7
JournalCarbohydrate Polymers
Publication statusPublished - 15 Dec 2018
Publication typeA1 Journal article-refereed


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.

Publication forum classification

Field of science, Statistics Finland