High piezoelectric performance of poly(lactic acid) film manufactured by solid-state extrusion
High piezoelectric performance of poly(lactic acid) film manufactured by solid-state extrusion
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DOI：
10.7567/jjap.53.09pc02
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发表时间：
2014-09-01
影响因子：
1.5
通讯作者：
Tajitsu, Yoshiro
中科院分区：
文献类型：
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作者：
Yoshida, Mitsunobu;Onogi, Takayuki;Tajitsu, Yoshiro
最近，人们尝试利用单轴拉伸聚（L-乳酸）（PLLA）薄膜的压电性能将其应用于扬声器、执行器和压力传感器。然而，单轴拉伸PLLA膜的剪切压电常数d(14)通常为6-10pC N-1。为了实现压力传感器、紧凑型扬声器和执行器的高灵敏度以及低驱动电压，需要进一步提高压电性能。在本研究中，我们进行了固态挤出（SSE）来拉伸和取向聚（D-乳酸）（PDLA），并验证了其对压电性能的影响。通过SSE，我们能够提高PDLA样品的机械强度和弹性模量。此外，样品的 d(14) 显着增加至约 20 pC N-1。 (C) 2014 日本应用物理学会
Recently, the application of uniaxially stretched poly(L-lactic acid) (PLLA) films to speakers, actuators, and pressure sensors has been attempted, taking advantage of their piezoelectric performance. However, the shear piezoelectric constant d(14) of uniaxially stretched PLLA film is conventionally 6-10 pC N-1. To realize a high sensitivity of pressure sensors, compact speakers, and actuators, and a low driving voltage, further improvement of the piezoelectric performance is desired. In this study, we carried out solid-state extrusion (SSE) to stretch and orient poly(D-lactic acid) (PDLA) and verified its effects on piezoelectric performance. By SSE, we were able to improve the mechanical strength and elastic modulus of PDLA samples. Furthermore, the d(14) of the samples was significantly increased to approximately 20 pC N-1. (C) 2014 The Japan Society of Applied Physics