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polyacrylamide viscosity concentration in cuba

  • Experiment 2: Characterization of polyacrylamide (PAM) by ...

    2020-12-30 · Thus, capillary viscometery gives only a relative measure of the viscosity and not an absolute one. Let us define a couple of terms before proceeding. Specific viscosity = hsp = hc - 1 (2) hs hc Intrinsic viscosity = h = lim hsp c c= lim 1 ln (3) cÆ0 cÆ0 hs where, c is the concentration of the polymer solution.

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  • Empirical Correlations for Viscosity of Polyacrylamide ...

    Combined effect of molecular weight, degree of hydrolysis, concentration of polymer and shear rate on viscosity of polymer solution: The modified form of power-law equation for polymer viscosity that takes into account the combined effects of molecular weight, degree of hydrolysis, concentration and shear rate is presented in this section. These four parameters affect the viscosity of the polymer solution and can be combined in one equation to predict the viscosity …

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  • Synthesis and characterization of amphoteric ...

    2018-6-10 · The particle size of the synthesized amphoteric polyacrylamide (AmPAM) ranged from 1 to 8μm and the intrinsic viscosity ranged from 5.6 to 14.2dL/g. The influences of aqueous solution of AS concentration, stabi-

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  • Viscosity of partially hydrolyzed polyacrylamide under ...

    2013-2-12 · The viscosity data for the product 3,100 at 30 °C are given in Fig. 2. The trend clearly complies with the power law. Similar test results were obtained for the product 3,200. It is obvious that higher HPAM concentration leads to higher viscosity. It can also be concluded that polymer viscosity is reduced at higher shear rate.

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  • Synthesis and Characterization of Different Molecular ...

    2017-4-27 · Viscosity average molecular weight of polyacrylamide The viscosity average molecular weight of polyacrylamides was carried out by determining the intrinsic viscosities of the polyacrylamides using Ubbelohede viscometer, no. 4809 ASTM at 25 ± 0.1ºC. The polyacrylamide solutions were prepared in distilled water.

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  • Synthesis, Characterization, and Flocculation Properties ...

    Figure 10h shows the interaction between polymer concentration and shear rates (Pc*ShR), where although the change of a shear rate from 1 to 100 (1/s) was found to have not caused a significant change in the viscosity level at low polymer concentration levels (100 ppm), a considerable effect on the viscosity level was, however, observed at a higher polymer concentration level. Hence, it can be concluded that the polymer concentration …

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

    2018-9-7 · High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity …

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  • Polyacrylamide degradation and its implications in ...

    2016-12-1 · The viscosity relationship between 1% HCl polymer solution and 10% HCl polymer solution derived from identical polymers declined according to the following relation: PAM > AM-AMPS > HPAM > AM-DMDAAC. The changes in polymer weight indicated that high concentration hydrochloric acid results in the direct fracture of the polymer backbone.

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  • Investigation of the degradation and stability of ...

    2020-12-30 · ) falling through a liquid (of viscosity η and density ρ L) under the action of gravitational forces (gravitational acceleration, g) acquires a steady terminal velocity Vt. Under these conditions, the viscosity of the liquid is given by the following equation: 2(ρ S-ρ L)R2g η = (3) 9 V t Polyacrylamide:

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  • Shear Viscosities of Ionic Polyacrylamide Solutions ...

    Solutions of ionic polyacrylamide polymers behave pseudoplastic in purely viscometric flow. Flow rate, polymer molecular weight and electrolytes affect solution viscosities to a large extent. Equations are given for the viscosity-shear rate relations in a form that can be used conveniently to account for the effect of viscosity on mobility.

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  • Rheological response of a modified polyacrylamide–silica ...

    Hybrid of hydrophobically modified polyacrylamide–silica nanoparticles emerged as a promising strategy for achieving enhanced stability and high viscosity. We experimentally explain the role of nanoparticles in bridging between polymer chains leading to an increase in the hydrodynamic radius and consequently the viscosity of the hybrid.

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  • Experimental and theoretical study of dilute ...

    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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  • Experiment 1: Polymerization of acrylamide in water

    2020-12-30 · As the molecular weight increases, the viscosity of the polymer solution increases. Typically, the 'zero shear' viscosity varies with the molecular weight (M) and concentration (c) as follows; η (0) ~ c2.5 M3.4 (2) Viscosity measurement using Stokes Law: (See addendum on the Falling Ball Viscometer) A solid sphere (of radius R and density ρ S

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  • Synthesis and characterization of amphoteric ...

    2018-6-10 · The particle size of the synthesized amphoteric polyacrylamide (AmPAM) ranged from 1 to 8μm and the intrinsic viscosity ranged from 5.6 to 14.2dL/g. The influences of aqueous solution of AS concentration, stabi-lizer concentration, initiator concentration, monomer concentration on the conversion of monomer, the intrinsic viscosity,

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  • Viscometric and Morphological Properties of Novel ...

    2013-1-15 · The viscometric properties of novel magnesium electrolyte–polyacrylamide composite polymers in aqueous solutions were investigated using response surface methodology. Independent factors such as concentration of the magnesium electrolyte (magnesium chloride and magnesium hydroxide), concentration of polyacrylamide, and the solution temperature were taken into …

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  • Improving the Viscosity of Partially Hydrolyzed ...

    It was found that higher monomer concentration resulted in higher viscosity-average molecular weight of polyacrylamide. Further study revealed that the hydrolysis of polyacrylamide by alkaline solution significantly increased the viscosity of 1000 ppm solution from 1.5 to 145.40 cP at room temperature, which is comparable to one of the ...

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  • Polyacrylamide Adsorption from Aqueous Solutions on Gold ...

    2004-1-15 · Viscoelastic properties of ultrathin films are important in such applications as polymer-supported lipid bilayers, and the quartz crystal microbalance (QCM) offers the ability to measure these properties in situ. In this study, polymer films are created by adsorbing polyacrylamide to gold and silver surfaces from aqueous solutions. The molecular weight of the polymers ranges from 10 …

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  • Dissolvable Polyacrylamide Beads for High‐Throughput ...

    2020-2-20 · The viscosity of the solution with dissolved beads is (8.24 ± 0.72) × 10 4 Pa s at 37 °C, which is only slightly higher (<3%) than that of the solution without beads, (8.03 ± 0.69) × 10 4 Pa s. As a control, the solution with intact beads has similar viscosity to the solution without beads (Figure S4, Supporting Information).

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  • On the correlation between the viscosity of partially ...

    The solution viscosity of neutral polyacrylamide (PAM), the partially hydrolyzed polyacrylamide (70% HPAM), and polyacrylic acid (PAA) were measured concurrently with the apparent diffusion coefficient in the dilute and semidilute concentration regimes.

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  • Adsorption Characteristics of Polyacrylamide and Sulfonate ...

    2003-2-20 · the viscosity, which is expected to be small but significant for high-molecular-weight polymers such as those used in this work. In distilled water, the Mark-Houwink viscosity parameters for polyacrylamide are K - 6.31 X 103 dl/g and a = 0.8 at 30°C.27 Similar parameters are not available for the acrylamide co-polymers.

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  • Empirical Correlations for Viscosity of Polyacrylamide ...

    2015-6-2 · Empirical Correlations for Viscosity of Polyacrylamide Solutions with the Effects of Concentration, Molecular Weight and Degree of Hydrolysis of Polymer Author: Muhammad R. Hashmet, Mustafa Onur and Isa M. Tan Subject: Journal of Applied Sciences Keywords: Viscosity, polyacrylamide solutiory, enhanced oil recovery Created Date

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  • Reprinted from Adsorption From Aqueous Solutions P.H ...

    2003-2-21 · ADSORPTION OF POLYACRYLAMIDE 147 FIGURE 2 Diagram illustrating changes in reduced viscosity of polyacrylamide with aging of the solutions under higher temperature conditions (60.C). ~ 4--e-a ~ 3 U) 0 u U):> 2 u i&: U ~ 1 0 oJ g 0 oJ ~ FIGURE 3 T'UE,mlft Diagram i.llu~trilting changes in reduced viscosity of polyacrylamide in alkaline solutions.

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  • high concentration polyacrylamide-based friction reduce

    High Concentration Polyacrylamide-Based Friction Reducer. Traditionally, friction reducer systems have been used to promote laminar flow in pipe to reduce friction pressure in pumping of low viscosity, slickwater-type fracture treatments. In these types of treatments, velocity is the key factor in proppant transport into the reservoir.

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  • Synthesis and Characterization of Different Molecular ...

    2017-4-27 · Viscosity average molecular weight of polyacrylamide The viscosity average molecular weight of polyacrylamides was carried out by determining the intrinsic viscosities of the polyacrylamides using Ubbelohede viscometer, no. 4809 ASTM at 25 ± 0.1ºC. The polyacrylamide solutions were prepared in distilled water.

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  • EFFECT OF ELECTROLYTE CONCENTRATION IN PROCESS

    2019-2-11 · Figure 20. Effect of pH and electrolyte concentration on the intrinsic viscosity of anionic polyacrylamide flocculant (PAM) at 25 °C. ..... 40 Figure 21 Reduced viscosity vs PAM concentration for different sodium chloride solutions

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  • Synthesis and properties of polyacrylamide by ...

    2017-1-1 · The concentration of the clay NPs in HPAM solution must be under a threshold value. In the experiments presented in this Letter, threshold concentration seems to be about 0.9 percent of weight. The present investigation showed that ultrasonic resulted in properties of physical changes, including the reduction of viscosity and PS.

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  • Properties of Polyacrylamides

    2020-7-11 · COMMERCIAL Polyacrylamides Major manufacturers of acrylamide polymers are BASF, SNF Floerger, Shangdong Tongli , and Kemira. Applications. Poly(acrylamide-co-acrylic acid) and its sodium salts (APAM) are widely used as thickening agent, binder, super absorbent, soil conditioner, filtering aid, flocculating agent, crosslinker, suspending agent, lubricant, and oil recovery agent.

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  • Polyacrylamide Adsorption from Aqueous Solutions on Gold ...

    2004-1-15 · Viscoelastic properties of ultrathin films are important in such applications as polymer-supported lipid bilayers, and the quartz crystal microbalance (QCM) offers the ability to measure these properties in situ. In this study, polymer films are created by adsorbing polyacrylamide to gold and silver surfaces from aqueous solutions. The molecular weight of the polymers ranges from 10 …

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  • Experiment 1: Polymerization of acrylamide in water

    2020-12-30 · As the molecular weight increases, the viscosity of the polymer solution increases. Typically, the 'zero shear' viscosity varies with the molecular weight (M) and concentration (c) as follows; η (0) ~ c2.5 M3.4 (2) Viscosity measurement using Stokes Law: (See addendum on the Falling Ball Viscometer) A solid sphere (of radius R and density ρ S

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  • Adsorption Characteristics of Polyacrylamide and Sulfonate ...

    2003-2-20 · the viscosity, which is expected to be small but significant for high-molecular-weight polymers such as those used in this work. In distilled water, the Mark-Houwink viscosity parameters for polyacrylamide are K - 6.31 X 103 dl/g and a = 0.8 at 30°C.27 Similar parameters are not available for the acrylamide co-polymers.

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  • Reprinted from Adsorption From Aqueous Solutions P.H ...

    2003-2-21 · ADSORPTION OF POLYACRYLAMIDE 147 FIGURE 2 Diagram illustrating changes in reduced viscosity of polyacrylamide with aging of the solutions under higher temperature conditions (60.C). ~ 4--e-a ~ 3 U) 0 u U):> 2 u i&: U ~ 1 0 oJ g 0 oJ ~ FIGURE 3 T'UE,mlft Diagram i.llu~trilting changes in reduced viscosity of polyacrylamide in alkaline solutions.

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  • Empirical Correlations for Viscosity of Polyacrylamide ...

    2015-6-2 · Empirical Correlations for Viscosity of Polyacrylamide Solutions with the Effects of Concentration, Molecular Weight and Degree of Hydrolysis of Polymer Author: Muhammad R. Hashmet, Mustafa Onur and Isa M. Tan Subject: Journal of Applied Sciences Keywords: Viscosity, polyacrylamide solutiory, enhanced oil recovery Created Date

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  • UV-Initiated Polymerization of Cationic Polyacrylamide ...

    2013-12-24 · The best condition for the intrinsic viscosity of P(AM-DAC-BA) in theory was that photoinitiator concentration was 0.60‰, incident light intensity 1491.67 μw/cm 2, and illumination time 117.89 min, respectively.

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  • Prediction of Viscosity for Partially Hydrolyzed ...

    Loss of solution viscosity in water of increasing ionic strength is a major problem encountered in the use of the partially hydrolyzed polyacrylamide polymers for improved oil recovery. It is recognized widely that the viscosity loss is more drastic in the presence of multivalent cations than is observed for sodium ions.

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  • STUDY ON GELATION OF POLYACRYLAMIDE

    Viscosity of partially hydrolyzed polyacrylamide (HPAM)/aluminum citrate (AlCit) colloidal dispersion gel has been measured in gelation of the system. The result showed that the viscosity of HPAM/AlCit cross|linking system increased with reaction time when the concentration of HPAM is higher, and the final viscosity of the system is higher than the viscosity of HPAM solution with …

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  • Polyacrylamide solution average Mw 1,500, 50 wt. % in

    Polyacrylamide solution average Mw 1,500, 50 wt. % in H2O; CAS Number: 9003-05-8; find Sigma-Aldrich-434930 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich

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  • Properties of Polyacrylamides - polymerdatabase.com

    2020-7-11 · Properties. Polyacylamides are high molecular weight water soluble or swellable polymers formed from acrylamide or its derivatives. Their glass transition temperature is well above room temperature (> 400 K). The only commercially important polyacrylamide is poly (2-propenamide) which is simply called polyacrylamide or PAM [-CH 2 CH (CONH 2 )-].

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  • Polyacrylamide/Guar Gum Adduct as a New Thickener for ...

    2018-6-13 · (2003). Polyacrylamide/Guar Gum Adduct as a New Thickener for Reactive Printing of Wool and Nylon‐6. Polymer-Plastics Technology and Engineering: Vol. 42, No. 5, pp. 757-777.

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  • Polymer Molecular Architecture As a Tool for Controlling ...

    2019-12-12 · Depending on the PAM molecular weight and concentration, a significant (as much as 5-fold) increase in solution viscosity (at a shear rate of 10 s –1) is observed. The elastic response of aqueous solutions containing the polymers critically depended on the molecular architecture.

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  • high concentration polyacrylamide-based friction reduce

    High Concentration Polyacrylamide-Based Friction Reducer. Traditionally, friction reducer systems have been used to promote laminar flow in pipe to reduce friction pressure in pumping of low viscosity, slickwater-type fracture treatments. In these types of treatments, velocity is the key factor in proppant transport into the reservoir.

    Get Price
  • Prediction of Viscosity for Partially Hydrolyzed ...

    Loss of solution viscosity in water of increasing ionic strength is a major problem encountered in the use of the partially hydrolyzed polyacrylamide polymers for improved oil recovery. It is recognized widely that the viscosity loss is more drastic in the presence of multivalent cations than is observed for sodium ions.

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  • Polyacrylamide and its derivatives for oil recovery

    2020-10-13 · Polyacrylamide is an umbrella term used to describe the homo-polymer of acrylamide and the copolymer of acrylamide with a small amount of other monomers. Owing to their superior property on increasing viscosity and gelling ability in the presence of crosslinkers, polyacrylamides has become the primarily selection for polymer

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  • Experiment 1: Polymerization of acrylamide in water

    2020-12-30 · As the molecular weight increases, the viscosity of the polymer solution increases. Typically, the 'zero shear' viscosity varies with the molecular weight (M) and concentration (c) as follows; η (0) ~ c2.5 M3.4 (2) Viscosity measurement using Stokes Law: (See addendum on the Falling Ball Viscometer) A solid sphere (of radius R and density ρ S

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  • Rheological response of a modified polyacrylamide–silica ...

    The viscosity improvement was more pronounced when the concentration of HMPAM was in the semi-dilute regime and concentration of NPs was higher than a critical threshold where the viscosity increased roughly by a factor of 1.5. Here we present the mechanisms of improved viscosity …

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  • Synthesis and properties of polyacrylamide by ...

    2017-1-1 · The concentration of the clay NPs in HPAM solution must be under a threshold value. In the experiments presented in this Letter, threshold concentration seems to be about 0.9 percent of weight. The present investigation showed that ultrasonic resulted in properties of physical changes, including the reduction of viscosity and PS.

    Get Price
  • Rheological Properties of Partially Hydrolyzed ...

    2020-7-5 · Summary Intrinsic Viscosity. is a measure for the internal friction in polymer solutions at the limit of zero polymer concentration. Thus, this quantity describes the effect of completely separated polymer chains on the solution viscosity.

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  • Viscosity of Polymer Solutions

    2021-5-11 · The heat and mass transfer behaviors of the polyacrylamide nanofluid in a porous medium are analysed in this study. It can be concluded that when the temperature changes from 298 K to 358 K, the viscosity decreases from 3.7204 Pa∙s to 1.5315 Pa∙s according to rheological experiment, and the thermal conductivity reduces from 0.5659 W∙m−1∙K−

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  • Heat and mass transfer analysis of polyacrylamide nanofluid ...

    Viscosity breaker for polyacrylamide friction reducers . United States Patent 7621335 . Abstract: A well treating fluid useful in slickwater fracturing processes contains polyacrylamide friction reducer and a viscosity breaker capable of reducing the viscosity of the well treating fluid to about the viscosity of water at ambient temperatures of ...

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  • Synthesis and properties of polyacrylamide by ...

    2017-1-1 · The concentration of the clay NPs in HPAM solution must be under a threshold value. In the experiments presented in this Letter, threshold concentration seems to be about 0.9 percent of weight. The present investigation showed that ultrasonic resulted in properties of physical changes, including the reduction of viscosity and PS.

    Get Price
  • Polyacrylamide in Water Treatment - Sinofloc

    The viscosity of polyacrylamide solution is related to its molecular weight and formulation concentration. 4, polyacrylamide dissolved: dissolved in order to play a full play flocculation. Sometimes need to speed up the dissolution rate, then consider increasing the concentration of polyacrylamide solution.

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  • Shear Viscosity of Poly (acrylamide/acrylic acid) Solutions

    2018-7-11 · the solution viscosity profile at different shear rates is necessary. Shear viscosity of polyacrylamide and its degradation behavior have been studied by Abdel-Alim et al. using a high shear Couette viscometer. [7] They studied the shear degradation of polyacrylamide after exposing it to various shear stresses at different temperatures. Despite the

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  • Effect of the Emulsifier Polymers and the Concentration of ...

    2012-10-15 · concentration of drug on the viscosity and antifungal activity of clotrimazole cream prepared without heating. The commercial 1% w/w clotrimazole cream (Canesten® cream) was used for comparison. Materials and Methods Materials Clotrimazole (ctz) (batch no. 20001304, Lambrochem, Italy) and Canesten® cream (batch

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  • Polymer Viscosity - Missouri S&T

    2018-3-22 · Adding a small concentration of polymer to water will significantly increase the viscosity of the water (Nouri & Root, 1971). The polymers most commonly used as mobility control agents include synthetic polymers (e.g., hydrolyzed polyacrylamide), biopolymers (e.g., xanthan), and, recently, associative polymer.

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  • Rheological Properties of Partially Hydrolyzed ...

    2009-2-18 · The hydrodynamic volume is given by so the intrinsic viscosity is Φ 0 is a constant which depends on the distribution of segments within the coil. A value of 3.67x10 2 4 /mol is appropriate for non-draining Gaussian coils [].For Gaussian chains, the ratio of the mean square radius of gyration to the molecular weight is a constant, so we have

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  • Viscosity of Polymer Solutions

    This study was conducted to investigate temperature, concentration and pumping effects on viscosity of two agricultural PAM formulations: a dry powder and an inverse oil emulsion. Flow tests, using solutions prepared from the dry powder PAM, showed that viscosity decreased as flow rate increased for concentrations greater than 400 ppm.

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  • CiteSeerX — Temperature, concentration, and pumping ...

    Polyacrylamide | Tradeasia International. Brief Overview. Polyacrylamide (PAM) is a water-soluble polymer made up of acrylamide subunits. It has a unique effect to increase the viscosity of water or promote the flocculation of particles present in water, it can also reduce the frictional resistance between the liquid.

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  • Characterizing Viscoelastic Properties of Polyacrylamide Gels

    2006-4-27 · polyacrylamide gel properties using a ball indentation technique. In addition, Dr. Dennis Discher and colleagues have evaluated the comparison between mechanical stiffness values of several natural and polyacrylamide gel substrates using AFM (Engler, 2004). Compelling results were obtained displaying similarities between several substrate types.

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  • Polyacrylamide-Treated Kaolin clay: A Fabric Study

    Fabric changes in sedimentation, viscosity, and liquid limit behavior in the presence of polyacrylamide corresponding to the change in the type of particle association are observed in SEM. Floc/aggregate size and density tend to increase with increasing polyacrylamide concentration, showing the formation of more larger, denser flocs.

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  • Cas 9003-05-8,Polyacrylamide | lookchem

    Miscibility: in generally used concentration, polyacrylamide has miscibility with most water-soluble natural or synthetic resins, latex systems, and most of the salts. Polyacrylamide can also quickly miscible with non-ionic, cationic and anionic surfactants, though with certain surfactants affecting the viscosity.

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  • Physical Properties of Associative Polymer Solutions

    2009-6-10 · 2.3 Relationship between the viscosity and the shear rate of SuperPusher D118. 17 2.4 Relationship between the viscosity and the shear rate of SuperPusher S255. 17 2.5 Relationship between the viscosity and the shear rate of FLOPAAM 3630s. 19 2.6 The e ect of salinity on the viscosity in associative polymer. . . . . . . . . . 20

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  • 00-305/1156 acryl.poly tn - Bio-Rad Laboratories

    2010-9-14 · polyacrylamide gel electrophoresis (PAGE) has led to its ... increase in viscosity. Excess ammonium persulfate and TEMED have other effects, including oxidation of sample proteins (especially ... Reducing the concentration of initiators results in longer polymer chain lengths, lower turbidity, and greater elasticity.

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  • Rheological properties of cellulose ethers and their ...

    2019-12-2 · (SE), polyacrylamide (PAA), inorganic thickeners (bentonites, sepiolites, etc.) that have the role of increasing the low shear viscosity of the wet mix. The main feature of pure cellulose ethers themselves is a rheological property, i.e. the viscosity of a 2% solution in water. In this paper, initially, we studied the

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  • Hyperfloc MG 655(anionic polyacrylamide) used for mine ...

    Three other isolated strains were identified as NP-9, NP-2 and NP-8 were able to reduce the concentration of acrylamide significantly. Present findings proved that both Bacillus sp. (NP-10) and Chelatococcus sp. (NP-11) could be suitable candidates for biodegradation of HPAM and NP-9, NP-2 and NP-8 strains as potential candidates for reducing ...

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  • Biodegradation of partially hydrolyzed polyacrylamide hpam ...

    High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction reducer in both enhanced oil recovery and high volume hydraulic fracturing. These applications of PAM can result in significant environmental challenges, both in water management and in …

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  • [PDF] Polyacrylamide degradation and its implications in ...

    2 天前 · Sodium dodecyl sulphate (SDS) is an anionic detergent which denatures proteins by 'wrapping around' the polypeptide backbone - and SDS binds to proteins fairly specifically in a mass ratio of 1.4:1. In so doing, SDS confers a negative charge to the polypeptide in proportion to its length - ie: the denatured polypeptides become ' rods' of ...

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  • Characterizing Viscoelastic Properties of Polyacrylamide Gels

    2006-4-27 · polyacrylamide gel properties using a ball indentation technique. In addition, Dr. Dennis Discher and colleagues have evaluated the comparison between mechanical stiffness values of several natural and polyacrylamide gel substrates using AFM (Engler, 2004). Compelling results were obtained displaying similarities between several substrate types.

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  • Polyacrylamide Emulsions Handbook - SNF

    2012-7-22 · Polyacrylamide Emulsions Handbook 2-2 Storage and handling of emulsions : basic principles Emulsions must be stored inside a building at a constant temperature between 5°C and 30°C. During the storage and handling, the emulsion must not be contaminated by water.

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  • Polyacrylamide injection matrix for serial femtosecond ...

    2019-2-21 · The viscosity of PAM can be increased by increasing the concentration of PAM; however, a final concentration of >20% (w/v) PAM is physically difficult to mix with the crystal sample in the syringe ...

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  • Viscosity of Polymer Solutions

    2020-7-5 · Summary Intrinsic Viscosity. is a measure for the internal friction in polymer solutions at the limit of zero polymer concentration. Thus, this quantity describes the effect of completely separated polymer chains on the solution viscosity.

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  • Temperature Dependence of the Shear-Thinning

    2020-10-14 · In this study, temperature dependence (25–70 °C) of the viscosity of a partially hydrolyzed polyacrylamide solution, the most widely used EOR polymer for oil field applications, was measured under varying conditions of the polymer solution (polymer concentration: 500–3000 ppm, NaCl salinity: 1000–10,000 ppm).

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  • Viscosity Breaker for Polyacrylamide Friction Reducers ...

    2009-11-24 · 1. A well treating fluid for use in slickwater fracturing comprising: water; a polyacrylamide friction reducer present in an amount of from about 0.005% to about 0.04%; and a viscosity breaker present in an amount above about 0.002% by weight, wherein the viscosity breaker is a peroxide selected from the group consisting of hydrogen peroxide, calcium …

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  • Polymer 101: Fundamentals of Flocculation

    Viscosity –Indicator of Polymer Solution Efficiency Sakaguchi, K.; Nagase, K., Bull. Chem. Soc. Japan, 39, p.88 (1966) Quantity of friction as measured by the force resisting a flow in which parallel layers have at unit speed relative to one another 0 2 4 6 8 10 12 14 02 468 10 Subsidence rate, ml/min Intrinsic viscosity of polymer solution

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  • Surface Tension Estimates for Droplet Formation in ...

    2011-9-9 · concentration will be closer to 1 ppm in the process slurry. At this concentration, the effect of the flocculant on surface tension should be negligible. If surfactants were present in the waste as a result of unintended contamination, their concentration would be too low to affect the dynamic surface tension at a time scale of ~0.001 s.

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  • Equation leads to better CE polymers by design - 2006 ...

    2006-6-18 · Finally, they used their equation to develop a polymer specifically designed to separate larger DNA strands. This had a polymer concentration of 3% and a molecular weight of 2.2MDa, but still had a viscosity of around 2000cP, and was only able to separate properly the five largest strands in the DNA mixture (from 434 to 587 base pairs).

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  • Friction Reduction and Suspension in High TDS Brines -

    2017-10-18 · Neither the standard or the high molecular weight anionic friction reducer exhibited acceptable suspensive properties. Example 3. The initial thought was that the high TDS of the brine was interfering with the uncoiling of the anionic polyacrylamide friction reducer polymers and thereby preventing its maximum viscosity but also any suspension benefits from the polymer …

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