Anisotropy of the triboelectric effects in polymeric slabs

Horia-Nicolai Teodorescu (1) , Yopa Prawatya , Thami Zeghloul (2) , Lucian Dascalescu (3)

1 TUIASI - "Gheorghe Asachi" Technical University of Iasi
2 TriboLub - Mécanique des interfaces lubrifiées [Institut Pprime]
3 EFD - Électro-Fluido-Dynamique [Institut Pprime]

The paper contributes to the understanding of triboelectric charging mechanisms. It brings evidence of the fact that in polymer slabs this effect may present significant direction dependence (anisotropy) related to the initial superficial roughness. The study was carried out on Polyvinyl Chloride (PVC) slabs in frictional sliding conformal contact with Acrylonitrile Butadiene Styrene (ABS) slices. It showed that the anisotropy of tribocharging is correlated to that of initial surface patterns (texturing) specific to polymer manufacturing process. The effect is preserved for small numbers of repeated movements even when moderate wearing occurs. Conclusions are derived for improving triboelectric energy harvesters, sensors, and other applications.

Mots clés: Triboelectrification; Direction-dependence; Sliding; Polymers; Potential profile

Domaines: Mécanique des fluides [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]; Physique Quantique [quant-ph]; Acoustique [physics.class-ph]; Biomécanique [physics.med-ph]; Matériaux; Polymères; Acoustique [physics.class-ph]; Automatique / Robotique; Electromagnétisme; Milieux fluides et réactifs; Energie électrique; Thermique [physics.class-ph]; Vibrations [physics.class-ph]; Physique mathématique [math-ph]

Horia-Nicolai Teodorescu, Yopa Prawatya, Thami Zeghloul, Lucian Dascalescu. Anisotropy of the triboelectric effects in polymeric slabs. Tribology International, 2019, 136, pp.496-507. ⟨10.1016/j.triboint.2019.04.014⟩. ⟨hal-02326548⟩