the effect of electric charge density of polyacrylamide

The effect of electric charge density of polyacrylamide

Poly(acrylamides) (PAMs) with various anionic and cationic charge densities from −1.64 to +0.98 meq/g but similar molecular weights were synthesized through radical polymerization. One of the aqueous PAM solutions and an aqueous dispersion of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibril (TOCN) were mixed at various PAM/TOCN weight ratios, and self-standing PAM

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the effect of electric charge density of polyacrylamide

The effect of electric charge density of polyacrylamide

Download Citation | The effect of electric charge density of polyacrylamide (PAM) on properties of PAM/cellulose nanofibril composite films | Poly(acrylamides) (PAMs) with various anionic and

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the effect of polyacrylamide charge density and molecular

The effect of polyacrylamide charge density and molecular

On the other hand, the adsorption behaviour of polyacrylamide on to kaolinite particles is dependent on the charge density of each polyacrylamide. The isotherm for the adsorption of the cationic C 492, which has a charge density of 10%, approached a plateau at 150 mg l −1 of polymer dosing and the maximum polymer adsorbance achieved is 1.5 mg

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the effect of polyacrylamide charge density and molecular

The effect of polyacrylamide charge density and molecular

The effects of the surface charge and molecular weight of anionic and cationic polyacrylamide (PAM) on the surface chemistry, settling rates, floc sizes and sediment bed compactness of kaolinite

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effects of charge density and molecular weight

Effects of charge density and molecular weight

Effects of charge density and molecular weight of cationic polyacrylamides on growth and structural characteristics of ground calcium carbonate aggregates. wastewater by polyacrylamide (PAM)

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polymer charge and molecular weight effects on treated

POLYMER CHARGE AND MOLECULAR WEIGHT EFFECTS ON TREATED

Water soluble anionic polyacrylamide (PAM) polymer with 18% charge density and molecular weight of 12-15 MDa (MDa = 106 Dalton = Mg mold) has been shown to greatly reduce erosion and sediment losses and effectively increase infiltration in furrow irrigated soils (Lentz et al., 1992, 1998; Sojka et al., 1998b).

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polyacrylamide molecular weight and charge effects

Polyacrylamide Molecular Weight and Charge Effects

Polyacrylamide Molecular Weight and Charge Effects on Infiltration under Simulated Rainfall Article (PDF Available) in Soil Science Society of America Journal 64(5):1786-1791 · September 2000

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polyacrylamide (pam) | request pdf

Polyacrylamide (PAM) | Request PDF

The effects of solution pH (in the range 3–10), presence of anionic polyacrylamide (PAM), carboxyl groups content in its macromolecules (5–50%), as well as anionic surfactant (sodium dodecyl

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polyacrylamide molecular weight and charge effects

Polyacrylamide Molecular Weight and Charge Effects

PAM MOLECULAR FORMULATION EFFECTS ON INFILTRATION RATES 1787 The amount of charge on a PAM is referred to as Table 1. Soil physical properties. charge density (CD) or percent hydrolysis, which is the Soil MWD† Sand Silt Clay mole percent of charged comonomers in the anionic mm g kg21 PAM. Charge density generally ranges from 2 to 40% Heiden 0

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soil & water management & conservation polyacrylamide

Soil & Water Management & Conservation Polyacrylamide

PAM are influenced by a complex set of relations among polymer properties (molecular weight, charge type, and density) and soil properties such as soil texture, organic matter content, composition and concentration of the soil solution, sediment properties, and soil clay mineralogy (e.g., Ben-Hur et al., 1992; Lu et al., 2002; Seybold,

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polyacrylamide and water quality effects on infiltration

Polyacrylamide and Water Quality Effects on Infiltration

PAM formulations (Pristine and Superfloc) were used in this study. Pristine (American Cyanamid Co., Wayne, NJ) is a 30% a.i. liquid emulsion (acrylamide/acrylic acid and ammonium salt plus 26% oil emulsion and 44% water) with high charge density (35% hydrolysis). The liquid emulsion contains a small

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effect of molecular mass and surface charge of anionic

EFFECT OF MOLECULAR MASS AND SURFACE CHARGE OF ANIONIC

Tatjana A. Kuljanin et al., Effect of molecular mass and surface charge of anionic polyacrylamide on pectin precipitation, Food and Feed Research, 45 (2), 169-177, 2018 were investigated the influence of surface charge density and molecular weight of anionic polyacrylamide (PAM) on the zeta potential and adsorption/flocculation beha-

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hydrolysis of cationic polyacrylamide and its effect

Hydrolysis of cationic polyacrylamide and its effect

(2016) evaluated the effect of charge density and molecular weight of C-PAMs on the growth and structural characteristics of GCC aggregates under neutral and alkaline conditions. In their study, high charge C-PAM formed larger and denser flocs than low or medium charge C-PAMs both in neutral and alkaline conditions.

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effect of the presence of cationic polyacrylamide

Effect of the presence of cationic polyacrylamide

The effects of solution pH and the content of cationic groups in polyacrylamide (PAM) macromolecules on the stability mechanism of aqueous alumina suspension were investigated. The following experimental techniques were applied: spectrophotometry, potentiometric titration, microelectrophoresis, viscosimetry and turbidimetry. They enable determination of polymer adsorbed amount, surface charge

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charge effects in the adsorption of polyacrylamides

Charge Effects in the Adsorption of Polyacrylamides

The I~-labeled non-ionic polyacrylamide (PAM, 5.2 X 106 molecular weight) and 33% hydrolyzed polyacrylamide (HPAM, 6.6 X 105 molecular weight) used here were synthesized and characterized by American Cyanamid Company. Fiscber-certified HCl and NaOH were used to adjust the pH of the suspension. Amend Drug and Chemical Company reagent grade,

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investigation of the stability of an alumina suspension

Investigation of the stability of an alumina suspension

Highlights Polyacrylamide (PAM) adsorption effect on Al 2 O 3 suspension stability was studied. Solution pH influences alumina stability in presence of ionic PAM. Conformation of adsorbed polymer chains changes with increasing pH. PAM causes the greatest destabilization of alumina particles at pH 6.

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polyacrylamide molecular weight and charge effects

Polyacrylamide Molecular Weight and Charge Effects

PAM MOLECULAR FORMULATION EFFECTS ON INFILTRATION RATES 1787 The amount of charge on a PAM is referred to as Table 1. Soil physical properties. charge density (CD) or percent hydrolysis, which is the Soil MWD† Sand Silt Clay mole percent of charged comonomers in the anionic mm g kg21 PAM. Charge density generally ranges from 2 to 40% Heiden 0

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an investigation of the effects of charged polyacrylamide

An Investigation of the Effects of Charged Polyacrylamide

Charge density, Porous media, SiC sand packs, Polyacrylamide This study has investigated the effects of three different polar polyacrylamides (anionic, cationic, and nonionic) on asphaltene deposition in porous media. All experiments were carried out in various dead oil flow rates (0.2, 0.1 and 0.02 cc/min) and

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preparation of polyacrylamide hydrogels at various charge

Preparation of polyacrylamide hydrogels at various charge

Abstract In this study, first polyacrylamide hydrogels were synthesized by free‐radical crosslinking polymerization of acrylamide monomer with N,N′‐methylenebis(acrylamide) as a crosslinker in an a...

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r.e. sojka and r.d. lentz usda agricultural research

R.E. Sojka and R.D. Lentz USDA Agricultural Research

molecular weight (107 g mot), anionic (18% charge density) polyacrylamide (PAM) is a potent flocculent. Economical PAM application strategies can reduce seal formation, runoff and erosion in furrow irrigation. Three years of studies verified this for 3 soils. Field slopes were 0.5-7.0%. Furrow lengths were 150-

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mechanism of tempo-oxidized cellulose nanofibril film

Mechanism of TEMPO-oxidized cellulose nanofibril film

Kurihara T, Isogai A (2015) The effect of electric charge density of polyacrylamide (PAM) on properties of PAM/cellulose nanofibril composite films. Cellulose 22:499–506. CAS; Article; Google Scholar

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citeseerx — net infiltration and soil erosion effects of a

CiteSeerX — Net infiltration and soil erosion effects of a

High molecular weight (107 g mot), anionic (18 % charge density) polyacrylamide (PAM) is a potent flocculent. Economical PAM application strategies can reduce seal formation, runoff and erosion in furrow irrigation. Three years of studies verified this for 3 soils. Field slopes were 0.5-7.0%.

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polyacrylamide and water quality effects on infiltration

Polyacrylamide and Water Quality Effects on Infiltration

PAM formulations (Pristine and Superfloc) were used in this study. Pristine (American Cyanamid Co., Wayne, NJ) is a 30% a.i. liquid emulsion (acrylamide/acrylic acid and ammonium salt plus 26% oil emulsion and 44% water) with high charge density (35% hydrolysis). The liquid emulsion contains a small

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molecular weight of amphoteric polyacrylamide: how it

Molecular weight of amphoteric polyacrylamide: How it

The properties of AmPAM, e.g. molecular weight (MW), charge density, and types of ionic monomer used, have significant impacts on its function. Sezaki et al. (2006a,b) synthesized an AmPAM series with the same charge ratio and similar MW (approximately 3 × 10 6 D) but with various charge densities; the colloid behavior differed greatly between

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an investigation of the effects of charged polyacrylamide

An Investigation of the Effects of Charged Polyacrylamide

Charge density, Porous media, SiC sand packs, Polyacrylamide This study has investigated the effects of three different polar polyacrylamides (anionic, cationic, and nonionic) on asphaltene deposition in porous media. All experiments were carried out in various dead oil flow rates (0.2, 0.1 and 0.02 cc/min) and

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molecular weight of amphoteric polyacrylamide: how it

Molecular weight of amphoteric polyacrylamide: How it

The properties of AmPAM, e.g. molecular weight (MW), charge density, and types of ionic monomer used, have significant impacts on its function. Sezaki et al. (2006a,b) synthesized an AmPAM series with the same charge ratio and similar MW (approximately 3 × 10 6 D) but with various charge densities; the colloid behavior differed greatly between

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effect of polyacrylamide on soil physical and hydraulic

Effect of polyacrylamide on soil physical and hydraulic

The effect of polyacrylamide (PAM), as a soil conditioner, on selected soil physical and hydraulic properties (infiltration rate (f(t)), hydraulic conductivity (HC), soil moisture content, aggregate stability (AS), and soil aggregation) was studied.

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polyacrylamide molecular formulation effects on erosion

Polyacrylamide molecular formulation effects on erosion

Influence of polymer charge type and density on polyacrylamide ameliorated irrigated furrow erosion. Pages 159–168 in Proceedings of the 24th annual international erosion control association conference, 1993 Feb. 23–26, Indianapolis, IN.

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polyacrylamide and biopolymer effects on flocculation

Polyacrylamide and biopolymer effects on flocculation

Characteristics of anionic biopolymer and polyacrylamide copolymer (PAM) treatment solutions used in flocculation, aggregate stability and effective hydraulic conductivity experiments. ID Polymer type Product Charge density % Molecular weight Mg mol−1 Concentration mg L−1 Flocculation experiment BP-0.5 Biopolymer SSX-10 30 10–20 0.5

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impact of anionic and cationic polyacrylamide

Impact of anionic and cationic polyacrylamide

In the present study, particular emphasis was put on the effects of the type of functional groups of anionic and cationic polyacrylamide (PAM) and solution pH on the mechanism of polymer adsorption on the surface of dispersed alumina. The polymer-adsorbed amount, surface charge density and zeta potential of solid particles without and with PAM, as well as the stability of Al2O3 suspension

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protein electrophoresis - assiut university

Protein Electrophoresis - Assiut University

Polyacrylamide Gel Electrophoresis (SDS-PAGE) It separates proteins according to molecular weight. Proteins load with the anionic detergent SDS, the charge of proteins is so well masked with a constant net charge per mass unit = 1.4 g SDS/ 1 g protein. Due to presence of SDS; the hydrogen bonds and folding of the tertiary

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adsorption properties of the nanozirconia/anionic

Adsorption properties of the nanozirconia/anionic

The adsorption mechanism of anionic polyacrylamide (PAM) on the nanozirconia surface was examined. The effects of solution pH, carboxyl groups content in macromolecules and anionic surfactant (sodium dodecyl sulfate-SDS) addition were determined. The more probable structure of polymer adsorption layer was characterized based on the data obtained from spectrophotometry, viscosimetry and

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