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Electret Effect In Composite Polylactide Based Films With Hydrophilic Nanodispersed Fillers

The study results of the electret state in composite polylactide based films with various hydrophilic nanodispersed fillers are presented. It is established that the emerging charge-dipole centers in the initial polylactide films are responsible for the stability of electret state. It is shown that deep traps have different depths for the positive and negative injected charge carriers.