The Viscosity of Dilute Solution of a Novel Polymer ‘Dextran’ in Different Solvents

Mahapatra, A. P.; Samal, Rajani K.; Samal, R. N.; Roy, G. S.

doi:10.1080/00319100008030287

Cited by 4 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus from our present study we conclude that the viscosity behaviour of Glucose in Dextran exhibits an opposite trend in low temperature to that in higher temperature [8] whereas the other solvents-Urea and Glycine show identical trends both at higher and lower temperature.…”

Section: A P Mahapatra Et Alcontrasting

confidence: 45%

“…The experimental determination of viscosity leading to the evaluation of Huggins' constant (kh), Kraemer's constant (kh) and viscosity concentration coefficient (4 of polymer Dextran in Urea, Glycine and Glucose at three different temperatures is the same as described in our earlier paper [8].…”

Section: Methods (Viscometric Measurement)mentioning

confidence: 99%

“…Attempts in these directions have been made by number of researchers [l -61. Earlier we [7,8] have studied the molecular *Corresponding author. interaction of a novel polymer "Dextran" of molecular weight 75000 and 250000 in solvents like Distilled water, 1(N) NaOH, and 1 0 KOH at six different temperature ranging from 25°C to 50°C and also in solvents like 6(M) Urea, 2(M) Glycine and 50% Glucose at three different temperature 4WC, 45°C and 50°C.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of Huggins' Constant, Kraemer's Constant and Viscosity Concentration Coefficient of Polymer Dextran in Urea, Glycine and Glucose

Mahapatra¹,

Samal

et al. 2001

Physics and Chemistry of Liquids

Self Cite

View full text Add to dashboard Cite

Reduced viscosity (q&) and Inherent viscosity (Inq,I/c) of dilute solution of water soluble polysaccharide polymer "Dextran" has been calculated by measuring the flow time of the polymer solution in solvents like 6(M) Urea, 2(M) Glycine and 50% Glucose at three different temperatures -25"C, 30°C and 35°C. From extrapolation of curve (q,/c) versus (c) and On qrel/c) versus (c), thermo viscosity parameters like Huggins' constant (Vv), Kraemer's constant (PA) and viscosity concentration coefficient (uz) have been estimated which enable us to know the fate of the polymer molecules in these solvents.

show abstract

Section: A P Mahapatra Et Alcontrasting

confidence: 45%

Section: Methods (Viscometric Measurement)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Huggins' Constant, Kraemer's Constant and Viscosity Concentration Coefficient of Polymer Dextran in Urea, Glycine and Glucose

Mahapatra¹,

Samal

et al. 2001

Physics and Chemistry of Liquids

Self Cite

View full text Add to dashboard Cite

show abstract

“…Viscosity measurement is a traditional method used to study the interactions between polymer molecules and solvent. In dilute solution of a simple binary system, Huggins constant k and instrinsic viscosity [η] can be obtained 14. Huggins constant k is used to predict the degree of interaction between polymer and solvent.…”

Section: Introductionmentioning

confidence: 99%

Conformation of polyacrylamide in aqueous solution with interactive additives and cosolvents

Shanks

2003

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT: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 Huggins constant k and intrinsic viscosity [] were used to study the conformation of the polymer chains and the degree of polymer-solvent interaction. In addition, the viscosity of diluted PAM solutions in water with acetone, ethanol, DMF, and ethylene glycol as cosolvent was measured. It was found that the polymer chain conformation contracted as the acetone, ethanol, and DMF cosolvent composition ratio increased, but there was no distinguishing difference between water-ethylene glycol compositions. The solution properties of PAM were used to estimate the swelling properties of PAM gel in the same external conditions, as gel is formed by crosslinking of linear polymer. In good solvent the polymer chain should be expanded, and gel is expected to have large swelling ratio. In water cosolvent systems, when the linear polymer chain underwent coil-globule transition, PAM gel should have volume phase transition under corresponding external conditions.

show abstract

“…The relative viscosity (η rel ) and specific viscosity (η sp ) were calculated. Huggins,10 Kraemer,11 and Schulz‐Blaschke's12 plots were drawn, and extrapolating these plots for infinite dilution c = O the intrinsic viscosity [η]13 was calculated. Finally using Stockmayer‐Fixman, Fox‐Flory, and Kurata‐Stockmayer's plot the viscosity molecular weight constant (K), short‐range parameter (A), and long‐range parameter (B) were evaluated.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of thermo‐viscosity parameters of dextran in polar and nonpolar solvent

Mahapatra¹,

Samal

Roy³

2001

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Some thermo-viscosity parameters like Viscosity-molecular weight constant (K), the short-range parameter, (A) and long-range parameter (B) have been evaluated for the polymer "Dextran" of three different molecular weights (M w ϭ 19,500, 75,000, and 250,000) in three different solvents like 6 (M) aqueous urea, 2 (M) aqueous glycine, and 50% aqueous glucose at temperatures ranging from 25 to 50°C. The study reveals that the viscosity-molecular weight constant (K) decreases with increase in temperature for polar solvents like aqueous urea and aqueous glycine. The value of "K" increases with the rise in temperature within the range of 25 to 35°C in case of a nonpolar solvent aqueous glucose and then "K" decreases with the increase in temperature within the range of 40 to 50°C for the nonpolar solvent aqueous glucose. The short-range parameter (A) shows the same trend as shown by "K" and the longrange parameter "B" exhibits no definite trend with the variation of temperature.

show abstract

The Viscosity of Dilute Solution of a Novel Polymer ‘Dextran’ in Different Solvents

Cited by 4 publications

References 7 publications

Evaluation of Huggins' Constant, Kraemer's Constant and Viscosity Concentration Coefficient of Polymer Dextran in Urea, Glycine and Glucose

Evaluation of Huggins' Constant, Kraemer's Constant and Viscosity Concentration Coefficient of Polymer Dextran in Urea, Glycine and Glucose

Conformation of polyacrylamide in aqueous solution with interactive additives and cosolvents

Evaluation of thermo‐viscosity parameters of dextran in polar and nonpolar solvent

Contact Info

Product

Resources

About