Recycling plastic accessories produced by 3D printing used in the context of radiation oncology


The project seeks to gain more basic knowledge of the recyclability of the plastic used in a medical context. By focusing on the particular context of 3D printed boluses for radiation therapy in cancer patients, the initiative will assess the influence of recycling processes and radiotherapy treatments on the structure and properties of the material (PLA, polylactic acid) before it is reused in treatment.

The project has three sub-objectives:

  1. Determine the extent to which repeated shredding-extrusion-3D printing shaping affects the properties of PLA.
  2. Determine the influence of radiation treatment (i.e., repeated application of high-energy photons or electrons) and the regular application of cleaning agents on the polymer’s properties.
  3. Evaluate the combined effect of shaping and radiotherapy treatment on the recyclability of PLA.


  • Medical community
  • Plastic
  • Polymer
  • Processes
  • Recycling

Affiliated research axes

Axis 2: Planning Optimization

Axis 3: Resource and Product Maximization


  • Lucas Hof

  • Nicole Demarquette

    Ph.D. Professor


Stéphane Bedwani


François De Blois


Karim Zerouali


Amount granted

The RRECQ is supported by the Fonds de recherche du Québec.
Fonds de recherche - Québec