A novel molecular association of poly (acrylic acid) in dilute solution under high shear flow

Abstract

A novel association of poly(acry1ic acid) in dilute solution is induced by high shear flow, producing a rigid chain morphology via interchain H-bonding; the association is destroyed upon adding salt to the shearing solution. Such macromolecular changes in conformation are reflected in drag reduction changes as a result of flow-polymer interaction.