Viscoelastic phase behavior in SBS modified bitumen studied by morphology evolution and viscoelasticity change

Viscoelastic phase behavior is introduced into SBS modified bitumen for the interpretation of phase morphology evolution, whose viscoelastic mode is proposed very recently by Zhu and Kringos (2015). The coupling effects of dynamic asymmetry and compositional asymmetry are investigated by morphology evolution and viscoelasticity change. It is found that the competition between SBS and asphaltenes to absorb light components plays a key role in morphology formation during phase separation of SBS/bitumen blends.