Accession Number : AD0778040

Title :   Turbulent Drag Reduction by Polyacrylic Acid.

Descriptive Note : Journal prepublication 1 Jun 73-1 Mar 74,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING

Personal Author(s) : Banijamali,S. H. ; Merrill,E. W. ; Smith,K. A. ; Peebles,L. H. , Jr

Report Date : 08 APR 1974

Pagination or Media Count : 16

Abstract : Polyacrylic acid was synthesized to high molecular weight, then studied as a drag reducing agent in dilute solutions of variable pH and ionic strength, the polymer being in both non-ionized and polysalt forms. As the polymer varies from the non-ionized polycarboxylic acid in the form of a compact coil at pH 2 to the polycarboxylate salt in the form of a very highly extended coil in solutions of low ionic strength, its effectiveness in drag reduction continuously increases. (Modified author abstract)

Descriptors :   *Drag reduction, *Polyacrylates, pH factor, Molecular structure, Turbulent flow, Polymers, Acrylic resins, Viscosity, Solutions(Mixtures)

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE