Study on Foaming Properties of Sodium Dodecyl Sulfate for Textile Foam Dyeing and Finishing

2011 ◽  
Vol 332-334 ◽  
pp. 1515-1519 ◽  
Author(s):  
Ke Li ◽  
Jian Fei Zhang ◽  
Qiu Jin Li
Keyword(s):  
Foam Stability ◽  
Sodium Dodecyl ◽  
Dynamic Surface Tension ◽  
Foaming Properties ◽  
Textile Processing ◽  
Dynamic Surface ◽  
Novel Approach ◽  
Foam Properties ◽  
Save Energy ◽  
The Relationship

Foam dyeing and finishing is a novel approach for textile processing, which can save energy and reduce the quantity of waster water. Frother plays an important role in foam dyeing and finishing systems. In this paper, the foaming properties of SDS were investigated for the purpose of application of foaming systems in fabric dyeing and finishing. The influence of SDS on foam properties was studied by measuring foamability, foam stability, equilibrium and dynamic surface tension, surface viscosity bubble size and bubble uniformity. At the same time, the relationship between foam apparent performance and microcosmic mechanism was also analyzed. The research will benefits the future study on the application of foam technique to the field of textile.

scholarly journals Foam Stability Study of Dilute Aqueous Nonionic Fluorinated Surfactant Systems

1970 ◽  
Vol 22 ◽  
pp. 47-54 ◽  
Author(s):  
S. C. Sharma ◽  
L. K. Shrestha ◽  
K. Aramaki
Keyword(s):  
Surfactant Concentration ◽  
Foam Stability ◽  
Water System ◽  
Dynamic Surface Tension ◽  
Stability Study ◽  
Concentration Limit ◽  
Foaming Properties ◽  
Dynamic Surface ◽  
Fluorinated Surfactants ◽  
Tension Properties

Foaming properties of dilute aqueous nonionic fluorinated surfactants, perfluoroalkyl sulfonamide ethoxylate, C8F17SO2N (C3H7)(CH2CH2O)nH (abbreviated as C8F17EOn, n = 10, 20) has been studied at 25°C. Both the surfactants produced a large volume of foams that are stable for several hours to a few days depending upon the surfactant concentration. The foam stability increases with increasing the surfactant concentration within the studied surfactant concentration limit. The C8F17EO10 /water system shows higher foam stability than that of the C8F17EO20 /water system. The foaming properties of the present systems show good correlation between dynamic surface tension properties and the dilatational surface elasticity.DOI: 10.3126/jncs.v22i0.522Journal of Nepal Chemical SocietyVol. 22, 2007 pp. 47-54

Pool Boiling Heat Transfer in Aqueous Solutions of an Anionic Surfactant

2000 ◽  
Vol 122 (4) ◽  
pp. 708-715 ◽  
Author(s):  
V. M. Wasekar ◽  
R. M. Manglik
Keyword(s):  
Anionic Surfactant ◽  
Pure Water ◽  
Pool Boiling ◽  
Sodium Dodecyl ◽  
Dynamic Surface Tension ◽  
Nucleate Boiling ◽  
Optimum Level ◽  
Lauryl Sulfate ◽  
Dynamic Surface ◽  
Influence Of Temperature On

Saturated nucleate pool boiling of aqueous surfactant solutions on a horizontal cylindrical heater has been experimentally investigated. Sodium dodecyl or lauryl sulfate (SDS or SLS), an anionic surfactant, is employed. Boiling performance, relative to that for pure water, is found to be enhanced significantly by the presence of SDS, with an early onset of nucleate boiling. An optimum level of enhancement is observed in solutions at or near critical micelle concentration of the surfactant; the enhancement, however, decreases considerably in higher concentration solutions. The dynamic surface tension measurements indicate a substantial influence of temperature on the overall adsorption isotherm. The diffusion kinetics of surfactant molecules and micelles is, therefore, expected to be quite different at boiling temperature than at room temperature. This greatly modifies the boiling mechanism that is generally characterized by the formation of smaller-size bubbles with increased departure frequencies, and a decreased tendency to coalesce which causes considerable foaming. [S0022-1481(00)00704-0]

scholarly journals Sonication effect on foam properties of egg white

2021 ◽  
Author(s):  
Dávid Nagy ◽  
Viktória Zsom-Muha ◽  
Csaba Németh ◽  
József Felföldi
Keyword(s):  
Dispersion Medium ◽  
Treatment Time ◽  
Foam Stability ◽  
Egg White ◽  
Ultrasound Treatment ◽  
Foaming Properties ◽  
Dispersed Particles ◽  
Foam Properties ◽  
Absorbed Power ◽  
The Stability

AbstractThe aim of this study was to determine the effect of ultrasound treatment on foaming properties of egg white. The samples were sonicated at 20/40 kHz and 180/300 W equipment power (3.7/6.9 W absorbed power) for 30, 45 and 60 minutes. Foam capacity had been increased by 25% due to sonication at 40 kHz and 6.9 W absorbed power for 60 minutes. This phenomenon may be caused by the homogenization effect of ultrasound and protein exposure of hydrophobic groups that improve the adsorption of protein onto the air/water interfacial molecules. It is found that frequency and duration of the treatment have no significant impact on the changes in foam capacity, only the absorbed power. On the other hand, foam stability had been decreased during the ultrasonic treatment. We can assume that sonication decreases the potential difference between the dispersed particles and the dispersion medium and this may be the cause of the collapse of the foam structure due to ultrasound treatment. In this case frequency, treatment time, and the absorbed power had a significant effect on the stability.

scholarly journals Salt Effects on Formation and Stability of Colloidal Gas Aphrons Produced by Anionic and Zwitterionic Surfactants in Xanthan Gum Solution

2020 ◽  
Vol 4 (1) ◽  
pp. 9
Author(s):  
Behnam Keshavarzi ◽  
Mohsen Mahmoudvand ◽  
Aliyar Javadi ◽  
Alireza Bahramian ◽  
Reinhard Miller ◽  
...  
Keyword(s):  
Surface Tension ◽  
Salt Concentration ◽  
Half Life ◽  
Xanthan Gum ◽  
Sodium Dodecyl ◽  
Life Time ◽  
Dynamic Surface Tension ◽  
Zwitterionic Surfactant ◽  
Dynamic Surface ◽  
Colloidal Gas Aphrons

This work is devoted to the influence of NaCl salt concentration on the formation and stability of colloidal gas aphrons (CGA) produced by the anionic surfactant sodium dodecyl sulfate (SDS) and zwitterionic surfactant coco amido propyl betaine (CAPB) in the presence of xanthan gum (XG) as a stabilizer. Dynamic surface tension measurements as well as volume and half-life time of the produced foams are considered for stability analysis. A sharp decrease of the half-life time and volume of the CGAs at NaCl concentrations larger than 20,000 ppm was observed, which was attributed to the precipitation of SDS in the solution. The mentioned SDS precipitation altered the dynamic surface tension behavior, dilational surface elasticity, and turbidity of the solution. The main reason for the precipitation of SDS is the increased Krafft point caused by the addition of salt. However, for the zwitterionic surfactant CAPB, the effects of added NaCl on the interfacial properties required for CGAs production was negligible due to the simultaneous effects on the cationic and anionic head groups in the CAPB leading to negligible changes in the net repulsion forces. Yet, an overall reduction in the half-life time of CGAs with increasing salt concentration, even when we have no precipitation, was observed for both surfactants, which could be explained by the reduction in the ability of XG to increase the viscosity with increasing salt concentration.

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