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Citation: XI Shuang, ZUO Shuang-Shuang. Modeling Study on Actuating Characteristics of Bending Polypyrrole Actuators[J]. Chinese Journal of Analytical Chemistry, ;2020, 48(11): 1486-1492. doi: 10.19756/j.issn.0253-3820.201345 shu

Modeling Study on Actuating Characteristics of Bending Polypyrrole Actuators

XI Shuang ^, ,
ZUO Shuang-Shuang

School of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China

Corresponding author: XI Shuang, shuang_996@163.com
Received Date: 14 June 2020
Revised Date: 10 September 2020

Fund Project: This work was supported by the Youth Science and Technology Innovation Foundation of Nanjing Forestry University (No.CX2017008), the Top-notch Academic Programs Project of Jiangsu Higher Education Institutions, and the Natural Science Foundation of Jiangsu Province, China (No.BK20160934).

The bending actuator based on polypyrrole has many advantages such as large mechanical stress, large strain value, high recoverability and safety, which shows tremendous application potential in the fields of micro/nano operating systems, biomedical equipment and biosensors. However, the relationship between the bending behavior of the actuator and the driving voltage still needs to be explored. In this work, the electrochemical mechanical properties of the layered bending polypyrrole actuator were studied on the basis of the self-built test platform. According to the structural characteristics and working principle, the actuator was equivalent to a cantilever beam for modeling, and the force generated by the ion migration inside the actuator was equivalent to the load applied on the cantilever beam to build the bending model of the actuator. Three kinds of actuators with different lengths were selected to apply low voltage to them and measure their tip displacement at different voltages. Taking the measured data into the above bending model, the functional relationship between the voltage and the tip displacement, curvature radius, bending moment and strain of the actuator were obtained, and the accuracy of the model was verified based on the experimental results. The model fitted the basic parameters of the actuator, and accurately predicted the deformation behavior in practical application, so as to improve the efficiency of research. This study provided the experimental and theoretical basis for the preparation and system modeling of polypyrrole actuators in practical applications, and promoted the application of micro actuators in the fields of micro/nano manipulation, particle analysis in solution, biosensors and so on.
- Polypyrrole,
- Actuator,
- Bending model,
- Electrochemical-mechanical property
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