Accession Number : AD0732500

Title :   Adsorption of Polyacrylamide (PAA) from Solution on Solid Surfaces (Adsorbsiya Polyakrilamida (PAA) 12 Rastvorov na Tverdoi Poverkhosti),

Corporate Author : ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA

Personal Author(s) : Malysheva,L. N.

Report Date : 22 SEP 1971

Pagination or Media Count : 9

Abstract : The adsorption of partially hydrolyzed dilute polyacrylamide solutions onto broken-up natural sandstone has been investigated under static conditions and under filtration conditions. Both ammoniacal and calciferous polyacrylamide solutions were investigated. In the absence of dissolved inorganic salts, calciferous polyacrylamide is less highly absorbed when its degree of hydrolysis is increased. Presumably this is true of ammoniacal polyacrylamide also; however, the samples used all contained much dissolved ammonium sulfate, which encouraged adsorption, even from extensively hydroloyzed solutions. Solutions containing 33% polyacrylamide showed substantially identical behavior under static and dynamic conditions; this was not true of the 12% solutions, where too low a value was obtained under dynamic conditions. This phenomenon was attributed to a low specific surface of the sandstone used in the experiment. (Author)

Descriptors :   (*POLYMERS, *ADSORPTION), (*LIQUID FILTERS, POLYMERS), POLYAMIDE PLASTICS, SANDSTONE, HYDROLYSIS, AMMONIUM COMPOUNDS, USSR

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE