| 초록 |
A variety of epoxy-acid based vitrimers, considered to be suitable as a polymer resin ink for 3D printing, were synthesized using photo- and thermal curing procedures. The completion of crosslinking reaction between the polymer chains was confirmed by monitoring the changes in the FT-IR data, mechanical and thermal properties of the samples in each reaction stage. The bond exchange reaction of the photocurable components between neighboring chains and their shape memory capability were also confirmed by the thermomechanical properties of the vitrimers using dynamic mechanical analysis, because the polymer chains are made up of dynamic exchangeable networks. The vitrimer samples were self-repairable and recyclable due to the presence of self-breakable and healable moieties in the backbone. |
