title: Liquid filament instability due to stretch-induced phase separation in polymer solutions: Liquid filament instability.
abstract: The instability in a jet of a viscoelastic semidilute entangled polymer solution under high stretching is discussed. Initially the jet is stable due to solution elasticity stopping the fluctuation growth. The modeling shows that a jet stretching results in a radial gradient in the polymer distribution: the polymer is concentrated in the jet centre, whereas the solvent is remaining near the surface. This viscous liquid shell demonstrates Raleigh-type instability resulting in the formation of individual droplets on the oriented filament. All process stages were observed experimentally.
authors.affiliation: Laboratory of polymer rheology, Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninkii prospect, 119991, Moscow, Russian Federation.
authors.forename: V G
authors.initials: VG
authors.lastname: Kulichikhin
authors.forename: Al Ya
authors.initials: AY
authors.lastname: Malkin
authors.forename: Al V
authors.initials: AV
authors.lastname: Semakov
authors.forename: I Yu
authors.initials: IY
authors.lastname: Skvortsov
authors.forename: A
authors.initials: A
authors.lastname: Arinstein