title: Intrinsic viscoelasticity in thin high-molecular-weight polymer films.
abstract: The rheology of 44-75-nm-thick polystyrene films were probed by destabilization in an electric field. The non-cross-linked films showed the hallmark of viscoelasiticy; they exhibited elastic behavior at high shear rates and viscous rheology at low shear rates for stationary applied fields. These results are interpreted in terms of surface adhesion of chain segments in contact with the substrate surface, which substantially reduces reptative molecular motion of nearly all chains within the film.
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom.
authors.forename: Xiaoyuan
authors.initials: X
authors.lastname: Sheng
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Wintzenrieth
authors.affiliation: Max-Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany.
authors.forename: Katherine R
authors.initials: KR
authors.lastname: Thomas
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom.
authors.forename: Ullrich
authors.initials: U
authors.lastname: Steiner
mesh_terms: D004548:Elasticity; D004560:Electricity; D011108:Polymers / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D012212:Rheology; D012997:Solvents / Q000737:chemistry; D014050:Toluene / Q000737:chemistry; D055682:Viscoelastic Substances / Q000737:chemistry*; D014783:Viscosity
chemical_list: D011108:Polymers; D011137:Polystyrenes; D012997:Solvents; D055682:Viscoelastic Substances; D014050:Toluene