Temperature-dependent aggregation of bio-surfactants in aqueous solutions of galactose and lactose: Volumetric and viscometric approach

S. Chauhan; Vivek Sharma; Maninder Kaur; Poonam Chaudhary

doi:10.1016/j.cjche.2017.10.025

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Temperature-dependent aggregation of bio-surfactants in aqueous solutions of galactose and lactose: Volumetric and viscometric approach

Chemical Engineering Thermodynamics | Updated：2026-01-06

- Temperature-dependent aggregation of bio-surfactants in aqueous solutions of galactose and lactose: Volumetric and viscometric approach
- Temperature-dependent aggregation of bio-surfactants in aqueous solutions of galactose and lactose: Volumetric and viscometric approach
- 中国化学工程学报（英文版） 2018年26卷第5期页码：1119-1131
- Affiliations：
  
  Department of chemistry, Himachal Pradesh University, Shimla 5,India
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.10.025
  中图分类号：
- 纸质出版：2018
- Accepted：
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S. Chauhan, Vivek Sharma, Maninder Kaur, 等. Temperature-dependent aggregation of bio-surfactants in aqueous solutions of galactose and lactose: Volumetric and viscometric approach[J]. 中国化学工程学报（英文版）, 2018,26(5):1119-1131.

S. Chauhan, Vivek Sharma, Maninder Kaur, Poonam Chaudhary. Temperature-dependent aggregation of bio-surfactants in aqueous solutions of galactose and lactose: Volumetric and viscometric approach[J]. Chin.J.Chem.Eng., 2018, 26(5): 1119-1131.
S. Chauhan, Vivek Sharma, Maninder Kaur, 等. Temperature-dependent aggregation of bio-surfactants in aqueous solutions of galactose and lactose: Volumetric and viscometric approach[J]. 中国化学工程学报（英文版）, 2018,26(5):1119-1131. DOI： 10.1016/j.cjche.2017.10.025.

S. Chauhan, Vivek Sharma, Maninder Kaur, Poonam Chaudhary. Temperature-dependent aggregation of bio-surfactants in aqueous solutions of galactose and lactose: Volumetric and viscometric approach[J]. Chin.J.Chem.Eng., 2018, 26(5): 1119-1131. DOI： 10.1016/j.cjche.2017.10.025.

摘要

Abstract

Modulation in the aggregation behavior of bio-surfactants (bile salts)

sodium cholate (NaC) and sodium deoxycholate (NaDC) in aqueous solutions of carbohydrates (galactose and lactose) have been investigated by measuring the density (ρ)

speed of sound (u) and viscosity (η) of the mixtures at different temperatures 293.15

298.15

303.15

308.15 and 313.15 K. The density and speed of sound data have been used to calculate various volumetric and compressibility parameters such as apparent molar volume (V

)

isentropic compressibility (κ

)

apparent molar adiabatic compression (κ

) to get a better insight into the micellization mechanism of bile salts. Further

the viscosity data have been studied in the light of relative viscosity (η

) and viscous relaxation time (τ). Some derived parameters such as free volume (V

)

internal pressure (π

) and molar cohesive energy (MCE) of NaC and NaDC in aqueous solution of saccharides have also been calculated from viscosity data in conjunction with density and speed of sound values. All the calculated and derived parameters provide qualitative inf

ormation regarding the nature of interactions i.e. solute-solute

solute-solvent and solvent-solvent in the solution.

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