A new photocrosslinkable polycaprolactone‐based ink for three‐dimensional inkjet printing
journal contributionposted on 16.05.2016, 10:32 by Yinfeng He, Christopher Tuck, Elisabetta Prina, Samuel Kilsby, Steven Christie, Steve Edmondson, Richard J.M. Hague, Felicity R.A.J. Rose, Ricky D. Wildman
A new type of photocrosslinkable polycaprolactone (PCL) based ink that is suitable for three-dimensional (3D) inkjet printing has been developed. Photocrosslinkable Polycaprolactone dimethylacrylate (PCLDMA) was synthesized and mixed with poly(ethylene glycol) diacrylate (PEGDA) to prepare an ink with a suitable viscosity for inkjet printing. The ink performance under different printing environments, initiator concentrations, and post processes was studied. This showed that a nitrogen atmosphere during printing was beneficial for curing and material property optimization, as well as improving the quality of structures produced. A simple structure, built in the z-direction, demonstrated the potential for this material for the production of 3D printed objects. Cell tests were carried out to investigate the biocompatibility of the developed ink.
The authors would like to acknowledge funding support from University of Nottingham, the EPSRC (Grant number EP/1033335/2, EPSRC Centre for Innovative Manufacturing in Additive Manufacturing) and Loughborough University. Elisabetta Prina was funded by the EPSRC and MRC Centre for Doctoral Training in Regenerative Medicine (EP/L015072/1).