the effect of anionic polyacrylamide molecular

The effect of anionic polyacrylamide molecular

The effect of anionic polyacrylamide conformation on the flocculating rates was determined by varying the pH and hydrolysis level. The effect of the polymer configuration was studied by varying the molecular weight and using both linear and branched samples.

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the effect of anionic polyacrylamide molecular

The effect of anionic polyacrylamide molecular

The effect of anionic polyacrylamide molecular conformation and configuration on flocculation effectiveness. Authors. J. A. Caskey, Corresponding author. Department of Chemical Engineering, Rose-Hulman Institute of Technology, 5500 Wabash Avenue, Terre Haute, IN 47803;

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the effect of anionic polyacrylamide molecular belgique

the effect of anionic polyacrylamide molecular belgique

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 suspensions has been investigated at pH 7.

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molecular dynamics simulations of the conformation

Molecular dynamics simulations of the conformation

The behavior of a single HPAM chain in concentrated aqueous salt solutions was studied by molecular dynamics simulations with the Gromacs software package version 5.0.2 (Berendsen et al., 1995) at pH 7 and 300 K.For the HPAM chain, we used the AMBER 99sb force field (Cornell et al., 1995, Sorin and Pande, 2005), which supports most common biomolecules.

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anionic polyacrylamide polymers effect on rheological

Anionic Polyacrylamide Polymers Effect on Rheological

Anionic Polyacrylamide Polymers Effect on Rheological Behavior of Sodium‐Montmorillonite Suspensions. Three anionic PAMs of three molecular weights (MWs) The polymer conformation factor has a greater impact on clay structure stabilization in suspension than the electrostatic repulsion effect. The clay structure stability was increased

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impact of anionic polyacrylamide on stability and surface

Impact of anionic polyacrylamide on stability and surface

The stability mechanism and thermal properties of the system alumina–anionic polyacrylamide (PAM) was studied. The polymer’s adsorption properties in dependence on the following parameters solution pH (in the range 3–9), temperature (in the range 15–35 °C), and carboxyl groups’ content in the PAM chains (in the range 5–30 %) were examined.

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the effect of cations on the activity of anionic

The effect of cations on the activity of anionic

Request PDF | The effect of cations on the activity of anionic polyacrylamide flocculant solutions | The conformation of acrylamide/acrylate copolymers' aqueous solutions is known to be affected

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effect of cationic surfactants on the conformation

Effect of cationic surfactants on the conformation

Molecular Dynamics Simulations of Adsorption of Poly(acrylic acid) and Poly(methacrylic acid) on Dodecyltrimethylammonium Chloride Micelle in Water: Effect of Charge Density. The Journal of Physical Chemistry B 2015 , 119 (38) , 12526-12539.

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impact of anionic polyacrylamide on stability and surface

Impact of anionic polyacrylamide on stability and surface

The stability mechanism and thermal properties of the system alumina–anionic polyacrylamide (PAM) was studied. The polymer’s adsorption properties in dependence on the following parameters solution pH (in the range 3–9), temperature (in the range 15–35 °C), and carboxyl groups’ content in the PAM chains (in the range 5–30 %) were examined.

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effects of anionic polyacrylamide on carbonation the

effects of anionic polyacrylamide on carbonation the

Effects of Anionic Polyacrylamide on Carbonation for the . The effects of different types of anionic polyacrylamide (PAM) on crystallization behavior of precipitated calcium carbonate (PCC) prepared via carbonation using calcium hydroxide and carbon dioxide gas. The percentage of aragonite phase increased higher reaction temperature.

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polyacrylamide - buy anionic polyacrylamide product

Polyacrylamide - Buy Anionic Polyacrylamide Product

Polyacrylamide , Find Complete Details about Polyacrylamide,Anionic Polyacrylamide from Polymer Supplier or Manufacturer-Changzhou KOYE CHEMICAL CO.,LTD

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anionic polyacrylamide polymers effect on rheological

Anionic Polyacrylamide Polymers Effect on Rheological

Anionic Polyacrylamide Polymers Effect on Rheological Behavior of Sodium-Montmorillonite Suspensions Abstract Polyacrylamide (PAM) is a long‐chain synthetic polymer that acts as a strengthening agent, binding clay particles together.

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polyacrylamide and biopolymer effects on flocculation

Polyacrylamide and biopolymer effects on flocculation

Polyacrylamide and biopolymer effects on flocculation, aggregate stability, and water seepage in a silt loam These results suggested that the biopolymer's bulkier molecular conformation limited the extension and flexibility of the molecule in solution, compared to PAM. Water soluble anionic polyacrylamide (PAM), a linear polymer syn-

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soil science society of america journal abstract

Soil Science Society of America Journal Abstract

The polymer conformation factor has a greater impact on clay structure stabilization in suspension than the electrostatic repulsion effect. The clay structure stability was increased with increasing polymer electrostatic negative charge for similar molecular weights. Please view the pdf by using the Full Text link under 'View' to the left.

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nanostructured dextran-graft-polyacrylamide flocculants

Nanostructured Dextran-Graft-Polyacrylamide Flocculants

Branched nanostructured copolymers dextran-g-polyacrylamide (D-g-PAA) in uncharged and anionic form were synthesized, characterized, and tested for flocculation in comparison with linear PAA. The polymers differed in the conformation of grafted polyacrylamide chains determining the molecular compactness.

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molecular conformation-controlled vesicle/micelle

Molecular Conformation-Controlled Vesicle/Micelle

Transitions in the Molecular Configuration and Aggregates for Mixtures of a Star-Shaped Hexameric Cationic Surfactant and a Monomeric Anionic Surfactant. Chemistry - An Asian Journal 2016, 11 (19) , 2763-2772. DOI: 10.1002/asia.201600432. Fan Liu, Kai Xu, Chang Xu, Hujun Xu.

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why small-scale testing of reagents goes wrong - papers

Why small-scale testing of reagents goes wrong - Papers

Caskey, JA & Primus, RJ 1986, ‘The effect of anionic polyacrylamide molecular-conformation and configuration on flocculation effectiveness’, Environmental Progress, vol. 5, pp. 98-103.

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effects of anionic polyacrylamide on carbonation the

effects of anionic polyacrylamide on carbonation the

Effects of Anionic Polyacrylamide on Carbonation for the . The effects of different types of anionic polyacrylamide (PAM) on crystallization behavior of precipitated calcium carbonate (PCC) prepared via carbonation using calcium hydroxide and carbon dioxide gas. The percentage of aragonite phase increased higher reaction temperature.

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a ph effect in the hpsec separation of polyacrylamide

A pH Effect in the HPSEC Separation of Polyacrylamide

four polyacrylamide-based samples having the eame nominal molecular weight and molecular weight distribution and different levels of anionic content. The samples are examined in two column systems under conditions where the ionic nature of these polymers plays a dominant role in the solution properties.

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polyacrylamide (pam) and soils - usda

Polyacrylamide (PAM) and Soils - USDA

received various pretreatments. Two polyacrylamide (PAM) compounds in which the NH2 was substituted with OH at 2% (2J) and 21% (21J), rendering them negatively charged, were used. Additionally, a guar compound (4246) used in the study was negatively charged and had a lower molecular weight than PAM.

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dextran-polyacrylamide as matrices for creation

Dextran-Polyacrylamide as Matrices for Creation

The branched water soluble copolymer dextran-graft-polyacrylamide in nonionic and anionic form has been used as nanocarriers for targeted delivery of an anticancer drug into tumor cells. The molecular parameters of the D70-g-PAA copolymer, as determined by size-exclusion chromatography (SEC), are reported in Table 1 .

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soil science society of america journal abstract

Soil Science Society of America Journal Abstract

The polymer conformation factor has a greater impact on clay structure stabilization in suspension than the electrostatic repulsion effect. The clay structure stability was increased with increasing polymer electrostatic negative charge for similar molecular weights. Please view the pdf by using the Full Text link under 'View' to the left.

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the molecular basis of the sodium dodecyl sulfate effect

The Molecular Basis of the Sodium Dodecyl Sulfate Effect

To investigate the molecular interactions of sodium dodecyl sulfate (SDS) with human ubiquitin and its unfolding mechanisms, a comparative study was conducted on the interactions of the protein in

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a guide to polyacrylamide gel electrophoresis and detection

A Guide to Polyacrylamide Gel Electrophoresis and Detection

that preserved native protein conformation, subunit interactions, and biological activity (Vavricka 2009). In such systems, proteins are prepared in nonreducing, nondenaturing sample buffer, and electrophoresis is also performed in the absence of denaturing and reducing agents. Data from native PAGE are difficult to interpret. Since

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long chain molecular structure polymer-anionic

Long chain molecular structure polymer-anionic

Impact of anionic polyacrylamide on SpringerLink. The polyacrylamide-adsorbed amount increase with the rise of carboxyl group content is also observed. More numerous anionic groups cause more expanded conformation of polymeric chains. Such structure of adsorbing macromolecules favors their higher adsorption in the alumina–polymer solution system.

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polyacrylamide molecular formulation effects on erosion

Polyacrylamide molecular formulation effects on erosion

Yang, L.-x., Li, S.-c., Sun, H.-l., Ye, F.-f., Liu, W. and Luo, S. 2011. Polyacrylamide molecular formulation effects on erosion control of disturbed soil on steep rocky slopes. Can. J. Soil Sci. 91: 917-924. Soil erosion caused by increasing runoff and soil disturbances is a severe problem on steep rocky slopes. One possible soil erosion control measure is the application of polyacrylamide

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effect of colloidal silica and electrolyte

Effect of colloidal silica and electrolyte

The anionic components used were non-aggregated and microaggregated anionic colloidal silica particles (ACS) and an anionic polyacrylamide (A-PAM). The C-PAM was adsorbed to a silica surface and the different anionic components were then added to the system. The effect of adding an electrolyte (NaCl) to some of these systems was also investigated.

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dextran-polyacrylamide as matrices for creation

Dextran-Polyacrylamide as Matrices for Creation

The branched water soluble copolymer dextran-graft-polyacrylamide in nonionic and anionic form has been used as nanocarriers for targeted delivery of an anticancer drug into tumor cells. The molecular parameters of the D70-g-PAA copolymer, as determined by size-exclusion chromatography (SEC), are reported in Table 1 .

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the molecular basis of the sodium dodecyl sulfate effect

The Molecular Basis of the Sodium Dodecyl Sulfate Effect

To investigate the molecular interactions of sodium dodecyl sulfate (SDS) with human ubiquitin and its unfolding mechanisms, a comparative study was conducted on the interactions of the protein in

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a guide to polyacrylamide gel electrophoresis and detection

A Guide to Polyacrylamide Gel Electrophoresis and Detection

that preserved native protein conformation, subunit interactions, and biological activity (Vavricka 2009). In such systems, proteins are prepared in nonreducing, nondenaturing sample buffer, and electrophoresis is also performed in the absence of denaturing and reducing agents. Data from native PAGE are difficult to interpret. Since

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optimal use of flocculants on the manufacture of fibre

OPTIMAL USE OF FLOCCULANTS ON THE MANUFACTURE OF FIBRE

The influence of the molecular weight and the anionic charge of anionic polyacrylamides on the flocculation effect on mineral fines retention, dewatering and formation and, as a consequence, on the overall efficiency of or anionic polyacrylamide (A-PAM) is added to a cement suspension. This dosage is expressed as .

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polyacrylamide flocculation of chromite ore

Polyacrylamide Flocculation of Chromite Ore

Polyacrylamide bonding with particle surfaces is strongly affected by both pH and the degree of hydrolysis. Polyacrylamides bind with chromite ore surfaces most probably through hydrogen bonding. Polyacrylamide conformation at the particle surface is affected by the nature of polymer-particle interactions.

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