Funktionelle Lack- und Harzsysteme zur additiven Fertigung von Medizinprodukten und gedruckten Leiterbahnen

Translated title of the contribution: Functional coating and resin systems for additive manufacturing of medical devices and printed circuit boards

Delara Gabriela Hartmann

Research output: ThesisDoctoral Thesis


The first part of this thesis deals with the development of a thiol-yne inkjet clearcoat for the coating of medical implants and surfaces with frequent skin contact. A low-viscosity alkyne monomer with exceptionally low cytotoxicity was synthesized, which reacted with multifunctional thiol monomers to form photopolymers with enhanced thermo-mechanical properties. In adhesion tests, osteosarcoma cells showed good growth behaviour on the polymer surface of the evaluated clearcoat, which opens the possibility to use such a coating for bone implants. In addition, the immobilization of a quaternary ammonium compound allows the antimicrobial functionalization of the polymer surface, enabling the coating to be used on surfaces with frequent skin contact to prevent germ transmission. The second part of this thesis describes the characterization of a ternary thiol-alkyne-methacrylate resin system, which is intended to be used for the production medical products by means of stereolithography with application-specific adaptable mechanical properties. Selected formulations were used to produce 3D printed materials with a high surface quality and resolution. In vitro degradation experiments, hemocompatibility tests and adhesion tests with osteosarcoma cells were performed with selected polymers to evaluate their potential for medical applications. The third part of this dissertation describes the development of a thermally reducible, particle-free silver ink for the production of printed conductors by screen printing. The investigated silver ink contains silver complexes which were converted into conductive elementary silver structures by near-infrared lamps in a reduction process downstream of the printing process. In addition to screen printing, the ink was successfully tested on a roll-to-roll test system in flexographic and engraving printing to produce conductive structures. An optimized formulation type was successfully tested on a laboratory inkjet printer. Initial printing tests were successful and confirm the wide potential of this self-reducing, conductive silver ink.
Translated title of the contributionFunctional coating and resin systems for additive manufacturing of medical devices and printed circuit boards
Original languageGerman
Awarding Institution
  • Montanuniversität
  • Gatterer, Karl, Assessor B (external), External person
  • Griesser, Thomas, Assessor A (internal)
Publication statusPublished - 2020

Bibliographical note

embargoed until 09-03-2025


  • polymer chemistry
  • photopolymers
  • thiol-yne reaction
  • ink-jet printing
  • ternary resin formulations
  • 3D printing
  • printed conductors
  • self-reducing silver ink
  • screen printing
  • roll-to-roll printing

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