Electroactive-paper actuator made with cellulose/NaOH/urea and sodium alginate |
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Authors: | Jaehwan Kim Niangui Wang Yi Chen Sun-Kon Lee Gyu-Young Yun |
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Institution: | (1) Creative Research Center for EAPap Actuator, Mechanical Engineering Department, Inha University, 253 Yonghyun-Dong, Nam-Ku, Incheon, 402-751, South Korea |
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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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Keywords: | Aqueous solvent Cellulose Electro-Active Papers (EAPap) Sodium alginate |
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