Accession Number : AD0766799

Title :   The Influence of the Chemical Nature of Polymers on their Drag Reduction Characteristics.

Descriptive Note : Technical rept.,

Corporate Author : HYDRONAUTICS INC LAUREL MD

Personal Author(s) : Frommer,Moshe A. ; Lavy,Adina ; Fraus,Menachem ; Elata,Chaim

Report Date : JAN 1973

Pagination or Media Count : 35

Abstract : Effects of molecular characteristics of water soluble polymers on drag reduction were investigated by studying changes in the drag reduction efficiency of long chain vinylic polymers, having an identical polymeric backbone, with changes in the chemical nature of their functional groups; and studying the effect of conformational changes of a simple polymer on its drag reduction efficiency by changing the pH or adding salt to the solution. The polymers studied were polyacrylamide, hydrolized polyacrylamide, polyacrylhydrazide and polystyrene sulfonate. (Modified author abstract)

Descriptors :   (*POLYMERS, *HYDRODYNAMICS), (*DRAG, REDUCTION), MOLECULAR PROPERTIES, SOLUTIONS(MIXTURES), PH FACTOR, SODIUM CHLORIDE, CORRELATION TECHNIQUES, STYRENE PLASTICS, SULFONATES, ACRYLIC RESINS

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE