Nanocellulose-based paper actuators

초록

Sustainability is essential in future technologies to harmonize with our environment. Cellulose is one of the nature’s most abundant natural polymers, the main chemical components of wood and plants. Owing to its own unique material properties, compared with the conventional usage, nanocellulose with a crystalline structure can be considered for various industrial applications. This chapter reviews the fabrication and performance of nanocellulose-based electroactive paper (EAPap) actuators in terms of its three subareas: piezoelectric, ionic, and hybrid EAPap along with their applications. Cellulose is known to have piezoelectric and ion migration effects, and these two effects can be maximized, which result in piezoelectric EAPap and ionic EAPap. To further improve functionality of cellulose, hybrid composites of inorganic functional materials are introduced by incorporating carbon nanotubes, graphene, titanium dioxide, and tin oxide with cellulose. Since cellulose is biocompatible, sustainable, biodegradable, capable of broad chemical modification, and hydrophilic and has high mechanical strength and stiffness, various cellulose-based devices are possible. © 2021 Elsevier Inc. All rights reserved.

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