title: Nonquiescent relaxation in entangled polymer liquids after step shear.
abstract: Large step shear experiments revealed through particle tracking velocimetry that entangled polymeric liquids display either internal macroscopic movements upon shear cessation or rupturelike behavior during shear. Visible inhomogeneous motions were detected in five samples with the number of entanglements per chain ranging from 20 to 130 at amplitudes of step strain as low as 135%.
authors.affiliation: Department of Polymer Science and Maurice Morton Institute of Polymer Science, University of Akron, Akron, Ohio 44325, USA. swang@uakron.edu
authors.forename: Shi-Qing
authors.initials: SQ
authors.lastname: Wang
authors.forename: Sham
authors.initials: S
authors.lastname: Ravindranath
authors.forename: Pouyan
authors.initials: P
authors.lastname: Boukany
authors.forename: Michael
authors.initials: M
authors.lastname: Olechnowicz
authors.forename: Roderic P
authors.initials: RP
authors.lastname: Quirk
authors.forename: Adel
authors.initials: A
authors.lastname: Halasa
authors.forename: Jimmy
authors.initials: J
authors.lastname: Mays