Projection stereolithography of biocompatible polymer structures

Abstract

The processes of 3D printing of porous matrix structures for tissue engineering from biocompatible polymers by projection stereolithography were studied. The threshold doses of visible radiation needed for sustainable photopolymerization of liquid compositions based on oligocarbonatemethacrylate and polyethylene glycol diacrylate were determined. The optimization of the stereolithography process parameters made it possible to achieve the spatial resolution of polymer matrix 3D printing up to the value of about 200 μm. The internal structure and the surface morphology of the fabricated samples were studied by optical and scanning electron microscopy, and their correspondence to the initial computer models was analyzed.