A porous polymeric sheet is provided having an electrostatic charge and comprising
a zero-three composite of a polymeric matrix and a ferroelectric material dispersed
therein. The polymeric component comprises a non-polar thermoplastic polymer, such
as a polyolefin, and a second thermoplastic polymer having polar functional units,
such as a telomer. The composite material is formed into a porous sheet and is
electrically or corona poled to create an electret material which is well suited
four use in various filtration, air-masking and dust wipe applications.
