This paper reports the piezoelectricity and molecular motion of PVDF-PMMA blends. The relaxation spectrum of the blends is very similar to that of PVDF-P (VDF-HFE) and PVDF-P (VDF-TFE)
but the piezoelectricity of which are wearker than that of PVDF-P (VDF-TFE). When the content of PMMA in the blend is equal to 3%
its piezoelectricity is nearly the same as PVDF
but the temperature of depolarization is higher than that of PVDF
PVDF (VDF-HFE) and PVDF (VDF-TFE). The piezoelectricity of PVDF-PMMA blends decrease with increase of the content of PMMA in the blends
owing to the lower concen-tration of the dipoles in the noncrystalline phase.