講演情報
[16a-W2_402-5]A tri-layer structure of poly-L-lactic acid and polyaniline with enhanced piezoelectric responses for pressure sensing
〇QI KANG1, Hiroaki Takehara1,2, Takanori Ichiki1,2 (1.Tokyo Univ., 2.iCONM)
キーワード：
poly-L-lactic acid、piezoelectricity
Piezoelectric polymers have attracted increasing attention in wearable electronics for their flexibility and self-powered property. Poly-L-lactic acid (PLLA), which is non-pyroelectric and biocompatible, represents a promising alternative, provided that its relatively low piezoelectric performance can be improved. To enhance the piezoelectric performance of PLLA, we introduced a layered structure incorporating polyaniline (PANI), a conductive polymer with unique structure of alternating single and double bonds. The resulting delocalized π electrons in PANI facilitate charge transport at PLLA/PANI interface, thus enhancing effective piezoelectric output. In this study, a tri-layer PLLA/PANI/PLLA structure was prepared, and its piezoelectric sensitivity and interfacial interactions were investigated to develop a piezoelectric pressure sensor with enhanced sensitivity.