Topology-Dependent Polymer Stretching and Scission in Solution at Extreme Shear Rates.

ABSTRACT: There has been significant interest in the engineering of polymer topology to control rheology and mechanical stability in dilute solutions for applications involving extreme shear rate flows. However, methods to experimentally probe properties at relevant shear rates (≈ 10⁴-10⁶ s^-1) have remained ex situ, obscuring access to measures of polymer deformation and rheology that would otherwise provide mechanistic insight into the topology-dependent properties that control their behavior in extreme shear flows. In this study, we used novel in situ small angle neutron scattering measurements in a capillary rheometer (capillary rheo-SANS) to simultaneously measure solution viscosities and polymer deformations in high shear on a series of chemically

SUBMITTER: van Ravensteijn BGP 

PROVIDER: S-EPMC12903432 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature