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Advanced ionic actuators with high-performance and high-reproducibility based on free-standing bacterial cellulose-reinforced poly(diallyldimethylammonium chloride) membranes and PEDOT/PSS electrodes

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Abstract

Ionic electroactive polymer actuators with high performance and high durability for developing active components have attracted significant attention in micrototal analysis systems (μTAS) and microelectromechanical systems. Herein, we introduced a novel ionic actuator fabricated with a free-standing bacterial cellulose (BC) reinforced poly(diallyldimethylammonium chloride) (PDADMAC) polyelectrolyte membrane sandwiched between two free-standing conductive polymer membranes of poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) (PEDOT/PSS) by hot pressing. Adding BC as reinforcement in the PDADMAC resulted in the preparation of a free-standing polyelectrolyte membrane with high mechanical properties. As a result, the hot-pressed BC-reinforced PDADMAC actuator exhibited excellent actuation performances with a large peak displacement of approx. 6 mm, a large bending strain of 0.16%, high reproducibility, high stability and durability up to 8 h. Simultaneously, we further verified the biomimetic applications of the actuators in microsystems including microgripper, bionic micro-finger, and micromixer in microfluidics.

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Acknowledgments

This research was supported by the Science Foundation of Zhejiang Sci-Tech University (Grant No. 21022315-Y) and the National Natural Science Foundation of China under Grant Nos. 51905487, 51525504, and 52175215.

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Conceptualization: FW; Methodology: YW; Formal analysis and investigation: YW, BY; Data curation and writing-original draft preparation: YW; Writing—review and editing: FW, QL; Funding acquisition: FW, QL; Resources and Supervision: YW, BY, QL.

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Correspondence to Fan Wang or Qinchuan Li.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper

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Wu, Y., Wang, F., Wu, Y. et al. Advanced ionic actuators with high-performance and high-reproducibility based on free-standing bacterial cellulose-reinforced poly(diallyldimethylammonium chloride) membranes and PEDOT/PSS electrodes. Cellulose 30, 7825–7837 (2023). https://doi.org/10.1007/s10570-023-05366-7

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  • DOI: https://doi.org/10.1007/s10570-023-05366-7

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