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Electroactive-paper actuator made with cellulose/NaOH/urea and sodium alginate

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Abstract

In an earlier work we reported the discovery of cellulose as a smart material that can be used in sensors and actuators. While the cellulose-based Electro-Active Paper (EAPap) actuator has many merits – lightweight, dry condition, biodegradability, sustainability, large displacement output and low actuation voltage – its performance is sensitive to humidity. We report here on an EAPap made with a cellulose and sodium alginate that produces its maximum displacement at a lower humidity level than the earlier one. To fabricate this EAPap, we dissolved cellulose fibers into a aqueous solution of NaOH/urea. Sodium alginate (0, 5 or 10% by weight) was then added to this cellulose solution. The solution was cast into a sheet and hydrolyzed to form a wet cellulose-sodium alginate blend film. After drying, a bending EAPap actuator was made by depositing thin gold electrodes on both sides of it. The performance of the EAPap actuator was then evaluated in terms of free displacement and blocked force with respect to the actuation frequency, activation voltage and content of sodium alginate. The actuation principle is also discussed.

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Acknowledgement

This work was supported by Creative Research Initiatives (EAPap Actuator) of MOST/KOSEF.

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Authors and Affiliations

  1. Creative Research Center for EAPap Actuator, Mechanical Engineering Department, Inha University, 253 Yonghyun-Dong, Nam-Ku, Incheon, 402-751, South Korea

    Jaehwan Kim, Niangui Wang, Yi Chen, Sun-Kon Lee & Gyu-Young Yun

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  1. Jaehwan Kim
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  2. Niangui Wang
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  3. Yi Chen
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  4. Sun-Kon Lee
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  5. Gyu-Young Yun
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Correspondence to Jaehwan Kim.

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Kim, J., Wang, N., Chen, Y. et al. Electroactive-paper actuator made with cellulose/NaOH/urea and sodium alginate. Cellulose 14, 217–223 (2007). https://doi.org/10.1007/s10570-007-9111-6

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  • DOI: https://doi.org/10.1007/s10570-007-9111-6

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