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Transient aspects of plasma luminescence induced by triboelectrification of polymers

Published version
Peer-reviewed

Type

Article

Change log

Authors

Nevshupa, R 
Wong, JSS 
Reddyhoff, T 

Abstract

Transient electric gas discharges that occur around sliding interfaces during contact electrification of polymers were studied at millisecond timescales and with micrometre resolution. Deduced vibrational temperatures indicate cold plasma resulting from positive corona discharge. At millisecond timescales, previously unseen rapid discharge events are observed, and modelling suggests that these result from streamer development, triggered by electron emission from the polymer surface. Those which occur over a period of several seconds are shown to be caused by competition between charge generation and the formation of polymer films. The findings explain the interplay between charging and plasma generation and their dependence on wear processes.

Description

Keywords

Triboelectrification, Luminescence, Charge, Plasma, Triboplasma, Discharge, Polymer, PTFE, UHMWPE

Journal Title

Tribology International

Conference Name

Journal ISSN

0301-679X
1879-2464

Volume Title

130

Publisher

Elsevier
Sponsorship
UK Engineering and Physical Sciences Research Council (EP/J002100/1), Additional equipment funding provided by the Taiho Kogyo Tribology Research Foundation (11A01). Spanish Ministry of Economy, Industry and Competitivity through the grant BIA2016-79582-R