Table 3 Material components of the expanding printable material. It is composed of hydrophilic acrylated monomers that create linear chains upon polymerization with a small amount of difunctional acrylate molecules

From: Active Printed Materials for Complex Self-Evolving Deformations

ComponentAmount (%w)
Vinyl Caprolactam50
Polyethylene30
Epoxy diacrylate oligomer18
Iragcure 8191.9
Wetting agent0.1