Uppsala University, SE
Summary:Cellulose is the raw material of choice for many industrial applications thanks to its low cost, abundance in nature, biodegradability, absence of toxicity, hygroscopicity, and excellent mechanical properties. The advances in nanoscience have also spearheaded research in the domain of nanocellulose. Native cellulose is an insulator but it can be rendered conductive properties by coating cellulose nanofibers with a continuous, 50-nm thick layer of conductive polymer, e.g. polypyrrole. The produced nanocomposite represents a high surface area paper sheet which can be integrated in flexible, non-metal, paper-based energy storage devices. This composite conductive paper material can also be used as a current-controlled ion extraction membrane for biomolecules, such as DNA oligomers, or be integrated in hemodialysis devices as filters to facilitate removal of small, charged uremic toxins from blood.