Polyion–counterion interactions in sodium carboxymethylcellulose–ethylene glycol–water ternary solutions

Sharma, Renuka; Das, Chanchal; Dahal, Sanjay; Das, Bijan

doi:10.1016/j.carbpol.2012.11.012

Cited by 8 publications

(4 citation statements)

References 40 publications

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“…The predictions for the conductivity of semidilute polyelectrolyte solutions have been compared with the experimental data and found to provide satisfactory descriptions [7,13].…”

Section: Introductionmentioning

confidence: 83%

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Thermodynamic, transport and frictional properties in semidilute aqueous sodium carboxymethylcellulose solution

Ray

Das

2016

The Journal of Chemical Thermodynamics

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“…The predictions for the conductivity of semidilute polyelectrolyte solutions have been compared with the experimental data and found to provide satisfactory descriptions [7,13].…”

Section: Introductionmentioning

confidence: 83%

“…A survey of the literature indicated that the influences of polyelectrolyte concentration, polyelectrolyte molecular weight, medium, and temperature on counterion condensation in salt-free polyelectrolyte solution have been fairly investigated [7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic, transport and frictional properties in semidilute aqueous sodium carboxymethylcellulose solution

Ray

Das

2016

The Journal of Chemical Thermodynamics

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“…Using this variation one can investigate the interactions that go on in the polyelectrolyte solutions. [6][7][8][9] Since the thermodynamic properties of polyelectrolyte solutions are useful in illuminating the ongoing structural interactions in solutions, they have been made use in the present investigation. Examples would make the matter clear.…”

Section: Introductionmentioning

confidence: 99%

The Apparent and Partial Molar Volumes of Sodium Carboxymethylcellulose in Acetonitrile-Water Mixed Solvent Media

Nandi¹,

Das²

2019

RJC

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The volumetric properties of Sodium Carboxymethylcellulose (NaCMC) in acetonitrile-water mixed solvent media containing (0.10, 0.20, and 0.40) volume fractions of acetonitrile were studied by measuring the density of solutions at temperatures (298.15, 308.15, 313.15, and 318.15) K. Besides studying the solvation behavior of the counterions, the study was focused on investigating the interactions between the counterion and the polyion. In the specified temperature range, a linear increase for apparent molar volume ( v φ ) with increasing polyelectrolyte concentration was observed in a medium with fixed volume fractions of acetonitrile. However, at a given temperature as the medium became richer in acetonitrile the limiting partial molar volumes ( 0 2 − V ) registered a decrease. But, when a polyelectrolyte solution in a fixed medium underwent a step-wise increase in temperature then 0 2 − V values increased thereby leading to the inference that a temperature-induced desolvation of the counterions results in more counterion binding at higher temperatures.

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“…This approach has been found to be successful to describe the conductivity of semidilute polyelectrolyte solutions. 27,[29][30][31][32] In a semidilute polyelectrolyte solution, Colby et al, 27 considered a polyion chain as an assembly of randomly walking N x correlation blobs each with a size of x 0 . Each correlation blob contains g monomers and bears an electric charge of q x ¼ |z c |efg.…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature, added electrolyte, and polymer molecular weight on the counterion-condensation phenomenon in aqueous solution of sodium polystyrenesulfonate: a scaling theory approach

Ray

Das

2015

RSC Adv.

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Interactions between a polyion and its counterions in aqueous solutions of an anionic polyelectrolyte sodium polystyrenesulfonate in the presence of sodium chloride were investigated using electrical conductivity as the probe. The specific conductivity vs. polyelectrolyte concentration data were analyzed with an equation recently developed by us considering the scaling description for the conformation of a polyion chain. The influences of (a) the molecular weight and the concentration of the polyelectrolyte, (b) the added electrolyte concentration, and (c) the temperature on polyion-counterion interactions were investigated. The extent of counterion condensation was found to be greatly affected by the concentration and molecular weight of the polyelectrolyte, the concentration of the added electrolyte, and the temperature. The polyion equivalent conductivity in conjunction with the derived coefficient of friction between the monomer units and the solvent provided important information concerning the relative importance of the size and charge of the polyions. The overall results have been elucidated taking the medium dielectric constant, the hydration behaviour of the counterions, and the coiling behavior of the polyion chains into account. The present study provides new insight as to how the polyelectrolyte molecular weight influences the counterion condensation behaviour in a polyelectrolyte solution in the presence of an added electrolyte.

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Polyion–counterion interactions in sodium carboxymethylcellulose–ethylene glycol–water ternary solutions

Cited by 8 publications

References 40 publications

Thermodynamic, transport and frictional properties in semidilute aqueous sodium carboxymethylcellulose solution

Thermodynamic, transport and frictional properties in semidilute aqueous sodium carboxymethylcellulose solution

The Apparent and Partial Molar Volumes of Sodium Carboxymethylcellulose in Acetonitrile-Water Mixed Solvent Media

Influence of temperature, added electrolyte, and polymer molecular weight on the counterion-condensation phenomenon in aqueous solution of sodium polystyrenesulfonate: a scaling theory approach

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