Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation

•Polyurethane networks based on PCL and hyperbranched polyester were prepared.•Important features of networks can be controlled through the change of PCL content.•PCL content required for the appearance of phase separated morphology is 30 wt.%.•Thermal stability and elongation at break increases with increasing PCL content.•Mechanical properties and Tg of networks are reduced by PCL content increase.