From:  Fabrication and characterization of pHEMA hydrogel conduit containing GelMA-HaMA IPN for peripheral nerve regeneration
 

Contact angles of the pHEMA hydrogels having different water contents in reaction mixture

Water content in reaction mixture (%)Contact angles (°)
4450.8 ± 15.4
5031.0 ± 7.6
5517.8 ± 10.2
586.2 ± 4.5