Partial molar heat capacities and volumes of transfer of some saccharides from water to aqueous urea solutions atT= 298.15 K

Banipal, Parampaul K.; Banipal, b T.S.; Ahluwalia, J. C.; Lark, B. S.

doi:10.1006/jcht.2000.0689

Cited by 33 publications

(26 citation statements)

References 76 publications

(63 reference statements)

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“…Sorbitol or mannitol was added to the Carbopol solutions in such a manner that the polyol to Carbopol mass ratio was 14. In the range of Carbopol concentrations investigated (0.005–0.015 wt %), the viscosity of the polyol is negligible . The pH of all solutions was adjusted to 7.4 with 0.1 M NaOH.…”

Section: Methodsmentioning

confidence: 99%

Insights into Carbopol gel formulations: Microscopy analysis of the microstructure and the influence of polyol additives

Lefrançois

Ibarboure

Payré

et al. 2015

J of Applied Polymer Sci

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International audienceCarbopol is a family of high molecular weight cross-linked poyacrylic acids widely used as thickening agents in several industrial applications. In this work, the structure of Carbopol 974P NF was investigated at pH 7.4 by means of capillary viscometry, dynamic rheology, fluorescence microscopy, and electron microscopy in the dilute and semi-dilute (hydrogel) state. Especially, high-pressure freezing technique has proved to be a technique of choice to visualize the Carbopol hydrogel microstructure through cryo-scanning electron microscopy analysis without artifacts related to the formation of ice crystals. It has been shown that the Carbopol hydrogel has a hierarchical structure made of large spherical entities of a few micrometers in size packed together and composed of much smaller agglomerated microgel particles. In addition, fluorescence and electron microscopies have pointed out that the presence of polyol additives in the gel formulation favors the formation of more dense or jammed structure, probably through hydrogen bonding. (c) 2015 Wiley Periodicals, Inc

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Section: Methodsmentioning

confidence: 99%

Insights into Carbopol gel formulations: Microscopy analysis of the microstructure and the influence of polyol additives

Lefrançois

Ibarboure

Payré

et al. 2015

J of Applied Polymer Sci

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“…In continuation of our work on saccharides [14][15][16][17][18], we report herein the apparent molar volumes, V 2,/ for various mono-, di-, tri-saccharides and methylglycosides in (0.5, 1.0, 2.0, and 3.0) mol Á kg À1 aqueous solutions of potassium chloride (KCl) at T = (288. 15, 298.15, 308.15, and 318.15) K. Standard partial molar volumes of transfer, D t V 1 2 at infinite dilution from water to aqueous solutions of KCl (cosolute) have also been determined.…”

Section: Introductionmentioning

confidence: 99%

Studies on volumetric properties of some saccharides in aqueous potassium chloride solutions over temperature range (288.15 to 318.15)K

Banipal

Chahal

Banipal

2009

The Journal of Chemical Thermodynamics

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“…This approach has further been discussed by Friedmann and Krishnan [42] and Franks and Evans [43] in order to include the solute-cosolute interactions in the solvation sphere, and as been used by various workers [44][45][46][47] to study the interactions of the amino acids and cosolutes in aqueous media. According to this treatment, a thermodynamic transfer function…”

Section: Resultsmentioning

confidence: 99%

Thermodynamic Analysis of Homologous α-Amino Acids in Aqueous Potassium Fluoride Solutions at Different Temperatures

Rajagopal¹,

Gladson

2012

J Solution Chem

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Partial molal volumes (V 0 φ ) and partial molal compressibilities (K 0 φ ) for glycine, L-alanine, L-valine and L-leucine in aqueous potassium fluoride solutions (0.1 to 0.5 mol·kg −1 ) have been measured at T = (303. 15, 308.15, 313.15 and 318.15) K from precise density and ultrasonic speed measurements. Using these data, Hepler coefficients (∂ 2 V 0 φ /∂T 2 ), transfer volumes ( V 0 φ ), transfer compressibilities ( K 0 φ ) and hydration number (n H ) have been calculated. Pair and triplet interaction coefficients have been obtained from the transfer parameters. The values of V 0 φ and K 0 φ vary linearly with increasing number of carbon atoms in the alkyl chain of the amino acids. The contributions of charged end groups (NH + 3 , COO − ), CH 2 group and other alkyl chains of the amino acids have also been estimated. The results are discussed in terms of the solute-cosolute interactions and the dehydration effect of potassium fluoride on the amino acids.

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Partial molar heat capacities and volumes of transfer of some saccharides from water to aqueous urea solutions atT= 298.15 K

Cited by 33 publications

References 76 publications

Insights into Carbopol gel formulations: Microscopy analysis of the microstructure and the influence of polyol additives

Insights into Carbopol gel formulations: Microscopy analysis of the microstructure and the influence of polyol additives

Studies on volumetric properties of some saccharides in aqueous potassium chloride solutions over temperature range (288.15 to 318.15)K

Thermodynamic Analysis of Homologous α-Amino Acids in Aqueous Potassium Fluoride Solutions at Different Temperatures

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