Biodegradable additive manufactured ferroelectret as mechanical sensor
Biodegradable additive manufactured ferroelectret as mechanical sensor
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DOI：
10.1109/sensors47087.2021.9639709
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发表时间：
2021-10
期刊：
影响因子：
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通讯作者：
Omar Ben Dali;S. Zhukov;C. Hartmann;H. Seggern;G. Sessler;M. Kupnik
中科院分区：
文献类型：
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作者：
Omar Ben Dali;S. Zhukov;C. Hartmann;H. Seggern;G. Sessler;M. Kupnik
铁电驻极体是压电聚合物，通常是表现出大压电响应的多孔聚合物泡沫。在这项工作中，我们展示了一种使用熔融沉积成型 (FDM) 的可生物降解 3D 打印铁电驻极体。尽管铁电驻极体的充电过程是在室温下进行的，但打印的PLA在此温度下在150天内仍表现出良好的电荷稳定性。所制造的铁电驻极体的一个显着特征是其机械性能主要取决于其几何形状，这使其有可能比印刷材料本身更柔软。事实上，本文研究的几何形状对于 1 kPa 以下的应力表现出 0.5 kPa 的杨氏模量。记录了 600 pC/N 的优异压电系数，可与众所周知的聚丙烯铁电驻极体相媲美。所提出的铁电驻极体适用于各种机械传感器应用。
Ferroelectrets are piezoelectric polymers, typically cellular polymer foams that exhibit a large piezoelectric response. In this work, we present a biodegradable 3D printed ferroelectret using Fused Deposition Modeling (FDM). Even though the charging process of the ferroelectret is conducted at room temperature, the printed PLA exhibits good charge stability over 150 days at this temperature. A distinctive feature of the manufactured ferroelectret is that its mechanical properties mainly depend on its geometry, offering the possibility for it to be softer than the printed material itself. In fact, the investigated geometry in this paper exhibits a Young’s modulus of 0.5 kPa for stresses under 1 kPa. An excellent piezoelectric coefficient of 600 pC/N was recorded, which is comparable with the well known polypropylene ferroelectret. The presented ferroelectret is suitable for various mechanical sensor application.