polyacrylamide viscosity concentration in Russia

Empirical Correlations for Viscosity of Polyacrylamide ...

Abstract: Polyacrylamides of varying molecular weights (very low, low, medium, high and very high) were synthesized using free radical polymerization and characterized by Infra Red (IR) spectroscopy, viscosity measurements, glass transition temperature (Tg) measurement and thermal gravimetric analysis (TGA).

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Investigation of changes in the viscosity properties of ...

Different concentrations of polyacrylamide and crosslinking agent were used in the gelation experiment. The experimental conditions were: pH = 6 ~ 7, temperature 60 ℃. The viscosity of the...

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The molecular explanation for polyacrylamide viscosity reduc ...

The structure and intrinsic viscosity of the partially hydrolyzed polyacrylamide (HAPM) and polyacrylamide (PAM) in aqueous solution were investigated by comparative studies of molecular dynamics simulation over a wide range of the NaCl concentration. The radius of gyration (R(g)), the hydrodynamic …

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Application of cold plasma technology for the ... - ScienceDirect

Results Acrylamide was separated from polyacrylamide hydrogel. The concentration of acrylamide in polyacrylamide hydrogel ranged from 3.9×10-9 to 3.1×10-8g/L in the 20 clinical cases. The peak area was favorable linear and the range was up to 3 000 μg/L.

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Measurement of polyacrylamide polymers in water and wastewat ...

J. Cent. South Univ. Technol. (2008) 15(s1): 443−446 DOI: 10.1007/s11771−008−396−x Viscoelasticity of mixed polyacrylamide solution XU Li-na(徐丽娜) (PetroChina Daqing Oilfield Engineering Co. Ltd, Daqing 163712, China) Abstract: The viscoelastic behavior of polyacrylamide solution is crucial for its application in various industries.

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Rheology of polyacrylamide-based fluids and its impact on ...

PAM viscosity for solutions with concentrations 24 ppm only increased about 5% relative to water for each 10 ppm increase in PAM concentration. Pumping a 2400 ppm PAM solution just once through a centrifugal pump reduced viscosity 15 to 20%; pumping five times reduced viscosity approximately 50%.

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Viscosity vs. spindle speed for polyacrylamide solution ...

Variation of viscosity against rotational speed: The plot of viscosity versus rotational speed for polyacrylamide solu- tions shows increase in viscosity values with rotational speeds (Fig. 9).

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Viscosity of the aqueous polyacrylamide solutions as a ...

Suspension stability, zeta potential, and pH value depend on colloidal properties [70,87,90]. Drag reduction properties include viscosity, pressure drop or pressure loss, friction factor ...

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Viscosity and shear rate relationship for 0.2% poly(acrylami ...

The value decreases when the glycerol concentration increases from 60% to 75%, and it increases when the glycerol concentration increases from 75% to 80%; from 80% to 88% of the glycerol ...

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Reduced viscosity as a function of PIB concentration. The st ...

Download scientific diagram | Reduced viscosity as a function of PIB concentration. The straight line intersection point on y-coordinate determine the intrinsic viscosity used to calculate the PIB ...

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A New Empirical Model for Viscosity of Sulfonated Polyacryla ...

viscosity of aqueous nonionic polyacrylamide increases with polymer concentration [27, 35, 36] along with its increase in the reduced viscosity with the molar concentra-tion of NaCl [35–39]. The detailed systematic study of the diffusion behavior of

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Correlation of Morphology of Electrospun Fibers with ...

Rheology of Linear Polyacrylamide Solution Alexandre A. VETCHER, 1;y Ryan GEARHEART,1 and Victor N. M ... We showed that the dependence of viscosity on M w and PAA concentration normalized to C e ...

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Tracking Initiator Effects in Polyacrylamide Polymerizations ...

Figure 3 shows the polymer concentration in the reactor for the KPS reactions at 1.5 and 1.0 wt%. This graph clearly shows that the concentration of initiator has an impact on the polymerization reaction kinetics, however, the reproducibility at the same nominal

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... the Mechanism of Breaking Polyacrylamide Friction ... ...

Procedure: A. Intrinsic viscosity determination by Ubbelhode viscometer: 1. Keep ready the solvent for this experiment: 0.05 M NaNO3 and 0.02% NaN3.Use previously prepared PAM solutions (Co = 4%, 8% or 12%) to form diluted solutions of concentration Ci such that ...

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Successfully Optimizing Breakers in Polyacrylamides for Slic ...

The viscosity of polyacrylamide (PAM) dilute aqueous solutions with NaCl, glucose, and SDS as additives was measured by Ubbelohde viscometry. There was linear relationship between reduced viscosity vs. PAM concentration in aqueous solutions. The were ...

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Self-assembly properties of hydrophobically associating ...

ing to the change of apparent viscosity of HACFP solutions. With a concentration lower than the CAC, intra-molecular ag-gregatesprevailoverinter-molecularones,whichcurlsthemac-romolecular chains and slowly increases theapparent viscosity. With a

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Does molecular weight affect viscosity of polyacrylamide?

The results also showed that the increase in the intrinsic viscosity and glass transition temperature were proportional to the increase in molecular weight of polyacrylamide. On the other hand it can be seen an increase in molecular weight caused a decrease of weight loss %.

How are polyacrylamides synthesized?

Abstract: Polyacrylamides of varying molecular weights (very low, low, medium, high and very high) were synthesized using free radical polymerization and characterized by Infra Red (IR) spectroscopy, viscosity measurements, glass transition temperature (Tg) measurement and thermal gravimetric analysis (TGA).

Does hydrolyzed polyacrylamide have a pH dependence?

They discovered that the viscosity of hydrolyzed polyacrylamide exhibits pH dependence as characterized by transition zones (at pH = 3 and pH = 6), where the viscosity suddenly changes. This is because the hydrogen ions adsorb and dissociate from the carboxyl functional groups, a discovery which has significant application potential , .

Does intrinsic viscosity affect molecular weight of polyacrylamide?

Intrinsic viscosity of the very low, low, medium, high and very high polyacrylamides samples were obtained.The results of intrinsic viscosity and viscosity average molecular weight are tabulated in table 2. It can be seen that the increase in the intrinsic viscosity was proportional to the increase in molecular weight of polyacrylamide.

What is the structure and intrinsic viscosity of partially hydrolyzed polyacrylamide (hapm)?

The structure and intrinsic viscosity of the partially hydrolyzed polyacrylamide (HAPM) and polyacrylamide (PAM) in aqueous solution were investigated by comparative studies of molecular dynamics simulation over a wide range of the NaCl concentration.

How to synthesis high molecular weight polyacrylamides?

The synthesis of medium, high and very high molecular weight polyacrylamides were achieved by increasing the concentration of acrylamide monomer. Fourier Transform Infrared Spectroscopy (FTIR) of polyacrylamides showed strong absorption at wave number 1655 cm-1 due to the presence of primary amide band.