Variations of morphology of fluoropolymer thin films versus deposition conditions

Kostyantyn Grytsenko, Yurii Kolomzarov, Peter Lytvyn, Iryna Lebedyeva, Elena Vashchilina

Research output: Contribution to journalArticlepeer-review

Abstract

Fluoropolymers (FP) are materials with a combination of excellent physical and chemical properties which make them useful in various industries. Thin films of these almost insoluble polymers were deposited with decomposition-evaporation of bulk FP in a vacuum. The pretreatment of the evaporated FP, the pressure of the emitted gas, the activation with accelerated electrons, the additional radio frequency (RF) plasma and the external magnetic field had complex effects on the morphology and relief of polytetrafluoroethylene (PTFE) films. Thin PTFE films with a roughness from 2 to 100 nm were produced. A PTFE film grown in a magnetic filed had nanoworms on its surface. The hardness of PTFE films was increased using low power RF plasma during deposition. The hardness of polychlorothrifluoroethylene (PCTFE) thin film was significantly smaller, whilst the relief of PCTFE films was rougher than that of PTFE films. A conformal PTFE coating was deposited on a nanostructured plastic surface using PTFE evaporation with electron activation and low power RF plasma.

Original languageEnglish (US)
Article number045006
JournalSurface Topography: Metrology and Properties
Volume9
Issue number4
DOIs
StatePublished - Dec 2021

Keywords

  • deposition in vacuum
  • fluoropolymer thin film
  • hardness
  • surface morphology

ASJC Scopus subject areas

  • Instrumentation
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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