期刊
POLYMER ENGINEERING AND SCIENCE
卷 62, 期 12, 页码 3964-3972出版社
WILEY
DOI: 10.1002/pen.26158
关键词
elastomers; macroporous polymers; nanocomposites; nanoparticles
资金
- Fundamental Research Funds for the Central Universities [YWF-22-BJ-J-1119]
- National Natural Science Foundation of China [52075026]
- Open Fund of State key Laboratory of Manufacturing Systems Engineering [SKLMS2020018]
This article demonstrates a novel soft and stretchable electret (PPSE) with great electromechanical performance. The PPSE exhibits a large d33eff value up to 477 pC/N and excellent charge stability, and it is capable of outputting electric signals from twisting, bending, and other mechanical interactions without breaking apart.
In recent years, soft and stretchable electrets have drawn considerable attention for their wide applications in energy harvesters, sensors, and actuators. However, existing electrets struggle to attain both longevity and stretchability (softness), which means charge retention capability and stretchability (softness) of electrets conflict. In this article, one novel soft and stretchable electret (PPSE) with great electromechanical performance is demonstrated. The PPSE is composed of a polydimethylsiloxane (PDMS) sponge and polytetrafluoroethylene (PTFE) particles. The uniformly distributed pores obtained by the sugar leaching method inside the PPSE can not only accumulate macroscopic dipoles but also provide great stretchability, flexibility, and softness for the material. The resulting PPSE has a large d33eff$$ {d}_{33}<^>{eff} $$ value up to 477 pC/N and great charge stability. Moreover, by the virtue of stretchability and softness, it can output electric signals from twisting, bending, and other mechanical interactions without breaking apart. With these great performances, PPSE will potentially enable applications for actuation, sensing, and energy harvesting.
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