Stress-induced surface segregation of polymer melts under tension

Polymers at the surface exhibit different molecular mobility from the bulk, leading to many interesting surface related phenomena. In this contribution, we report one stress-induced surface segregation phenomena of polymer melts under uniaxial extension. The basic characteristics of surface segregation under tension is very different from the surface wrinkling previously observed under compressive strains. Scanning electron microscopy and atomic force microscopy have been employed to characterize the surface segregation. The basic characteristics of the surface microstructures and their dependence on the deformation conditions have been investigated and will be discussed in the presentation.