Viscoelasticity of San Melts with Dispersed Uncrosslinked Rubber Particles

The viscoelastic properties of AES ( acrylonitrile-EPDM-styrene ) melts have been investigated at different temperatures and frequencies. Some analogies and differences are outlined with respect to the data reported in the literature for ABS and HIPS. A physical gelation model is applied to account for the behaviour observed at low frequencies and at high rubbery phase contents.