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Cell adhesion to plasma-coated PVC.

Elidiane C Rangel1, Eduardo S de Souza1, Francine S de Moraes1

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Polymer films deposited using acetylene-argon plasmas create biocompatible surfaces for cell culture. These non-cytotoxic coatings support cell adhesion and proliferation on PVC plates, ideal for medical devices.

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Area of Science:

  • Materials Science
  • Biotechnology
  • Surface Chemistry

Background:

  • Developing biocompatible materials is crucial for medical devices and cell culture applications.
  • Polymer films offer tunable surface properties for enhanced cellular interactions.
  • Radiofrequency plasmas provide a versatile method for surface modification.

Purpose of the Study:

  • To investigate the effect of argon proportion in acetylene-argon plasmas on polymer film properties.
  • To evaluate the biocompatibility and cell adhesion of these polymer-coated surfaces for Vero cells.
  • To determine the potential of these coatings for designing biocompatible devices.

Main Methods:

  • Thin polymer films were deposited onto PVC plates using radiofrequency acetylene-argon plasmas with varying argon proportions (5.3–65.8%).
  • Cell adhesion and proliferation of Vero cells were assessed on coated surfaces over different incubation times.
  • Cytotoxicity was evaluated using spectroscopic methods, and surface properties like roughness and surface free energy were analyzed.
  • X-ray Photoelectron Spectroscopy (XPS) was used to detect surface elemental composition.

Main Results:

  • Surface free energy generally increased with higher argon proportions, except for a sample with 28.9% argon, which showed reduced reactivity.
  • Surface roughness remained stable for low argon percentages but increased with higher argon content.
  • Vero cells proliferated on all tested surfaces, including the bare PVC control.
  • No cytotoxicity was observed for any of the polymer coatings, regardless of deposition conditions.

Conclusions:

  • Acetylene-argon plasma-deposited polymer films on PVC exhibit excellent biocompatibility.
  • The surface properties can be tuned by adjusting the argon proportion in the plasma.
  • These non-cytotoxic coatings are promising for applications in biocompatible device design and cell culture environments.