Factors effecting a loss of flocculation activity of polyacrylamide solutions: Shear degradation, cation complexation, and solution aging
Nonionic polyacrylamides were unaffected. Viscosity–aging of polyacrylamide solutions was observed over a period of several months, but was insufficient to affect the flocculation activity. In the presence of 3% ethanol or methanol, no aging was
Chemical Degradation of Polyacrylamide during Hydraulic Fracturing
Polyacrylamide (PAM) based friction reducers are a primary ingredient of slickwater hydraulic fracturing fluids. Little is known regarding the fate of these polymers under downhole conditions, which could have important environmental impacts
Polyacrylamide – Safe Cosmetics
Polyacrylamide is made up of repeating molecules of acrylamide, which is a suspected carcinogen. Trace amounts of acrylamide remain in polyacrylamide. Acrylamide is found in in lotions, powders and creams. [8],[9],[10] Daily exposure to
Spatial regulation and surface chemistry control of monocyte/macrophage adhesion and foreign body giant cell formation by photochemically
Nonionic polyacrylamide greatly inhibited adhesion and induced clumping of the few monocytes that did adhere. Macrophage adhesion and spreading led to high degrees of interleukin-13 induced foreign body giant cell formation on both the anionic
The state of association of band 3 protein of the human erythrocyte membrane in solutions of nonionic detergents.
21/4/1983 · The state of association of band 3 protein of the human erythrocyte membrane in solutions of nonionic detergents. Pappert G, Schubert D. Band 3 protein, the anion transport protein of the human erythrocyte membrane, was solubilized and purified
The role of hydration degree of cations and anions on the adsorption of high-molecular-weight nonionic polyacrylamide on glass surfaces
5/12/2012 · The differences between the adsorption of the nonionic polyacrylamide on glass in LiCl and KCl is attributed to the larger size of the potassium cation and its lower hydration. Consequently, this can reduce the hydration of the glass surfaces
Introduction to Polyacrylamide Gels | Bio-Rad Laboratories
Polyacrylamide gels are characterized by two parameters: total monomer concentration (%T, in g/100 ml) and weight percentage of crosslinker (%C). By varying these two parameters, the pore size of the gel can be optimized to yield the best
Effects of Polymer Molecular Weight on Adsorption and Flocculation in Aqueous Kaolinite Suspensions Dosed with Nonionic Polyacrylamides – MDPI
The effects of polyacrylamide (PAM) molecular weights (MWs) on the PAM adsorption capacities and PAM-mediated flocculation of kaolinite suspensions were investigated using a series of nonionic PAMs with different MWs. Adsorption tests using
POLYACRYLAMIDE GELS CONTAINING LATENT THERMAL DEGRADATION INHIBITOR – AMERICAN CYANAMID CO.
United States Patent 3622533 Abstract: Cyanamide, guanidine, succinimide, and urea inhibit the cross-linking of polyacrylamide without inhibiting the reaction or reactions by which monomeric acrylamide is converted to nontoxic form when aqueous
Determination of the distribution of sodium and potassium ion activated adenosinetriphosphatase among the various oligomers formed in solutions of
25/5/1982 · 1. Biochemistry. 1982 May 25;21(11):2667-74. Determination of the distribution of sodium and potassium ion activated adenosinetriphosphatase among the various oligomers formed in solutions of nonionic detergents. Craig WS. Sodium and potassium
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