N. Rostami, Dennis Graf, L. Schranzhofer
May 1, 2019
Citations
0
Influential Citations
11
Citations
Journal
Progress in Organic Coatings
Abstract
Abstract Polymerization of an acrylate-based ink, filled with aluminum oxide nanoparticles, which is going to be used in PolyJet™ technology (Stratasys Ltd., Israel), was investigated. In a free-radical photopolymerization of acrylates, oxygen inhibits polymerization and results in a decreased monomer conversion. The presented research shows the influence of TODA (2-[2-(2-methoxyethoxy)ethoxy]acetic acid) on the polymerization degree and mitigation of the oxygen inhibition effect. By incorporating 20–40 vol% of TODA into the system, full polymerization of acrylate in air atmosphere can be achieved. This is due to dissociable hydrogens in the TODA structure. In addition, TODA can overcome agglomeration of the aluminum oxide nanoparticles in the ceramic-filled ink due to steric stabilization.