Synergistic Enhancement of Conductivity and Dispersion in PTFE/Graphene Oxide Composites via Plasma Surface Modification

Abstract

We employed oxygen plasma treatment to activate the PTFE surface and introduce oxygen-containing polar groups (-OH, C-O, C=O), thereby enhancing surface energy and interfacial reactivity. We subsequently composited the modified PTFE (PTFE-O) with graphene oxide (GO), enabling tight interactions between the two phases through hydrogen bonding and van der Waals forces. Comprehensive characterizations, including XPS, FTIR, SEM, and contact angle analysis, confirmed the successful surface modification and uniform dispersion of GO. The optimized PTFE-O/GO composite exhibits a low resistivity of 2.41×10³ Ω·cm under a compression pressure of 2 MPa, demonstrating markedly improved conductivity and antistatic performance. These findings provide an effective route for constructing conductive PTFE-based composites and offer new insights into interface-engineered antistatic polymer materials.

Keywords

polytetrafluoroethylene (PTFE) / plasma treatment / graphene oxide / interfacial bonding / antistatic performance

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