Structural changes in polytetrafluoroethylene molecular chains upon sliding against steel
Source abstract
Abstract
In this work, the influence of dry sliding between a steel counterpart ball and polytetrafluoroethylene (PTFE) plate sample on the transformation of PTFE molecular structure is investigated. With X-ray diffraction, differential scanning calorimetry, Fourier transform infrared (FT-IR) spectroscopy and Raman spectroscopy, the crystallinity of PTFE wear debris is revealed to be higher than that of the original PTFE sample due to shear-induced ordering during sliding. The different morphologies of the PTFE transfer film from the original PTFE, and the wear debris observed with SEM suggests that some properties have been changed in the transfer film. According to FT-IR analysis, part of the PTFE chains in the wear debris and transfer film has a conformational change into a planar-zigzag conformation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Tribology and Wear Analysis · Lubricants and Their Additives · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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