| 摘要 |
In the present invention, there is provided a polymeric piezoelectric material containing an optically active helical chiral polymer having a weight average molecular weight of 50,000 to 1,000,000, in which the crystallinity obtained by the DSC method is 20% to 80%, and the product of the aforementioned crystallinity and the normalized molecular orientation MORc, when the reference thickness measured using a microwave transmission-type molecular orientation meter is 50 mum, is 25 to 250. |
