The effect of water hardness on the solubilizing activity of linear alkylbenzene sulfonate

1969 ◽  
Vol 46 (10) ◽  
pp. 544-548 ◽  
Author(s):  
Haruhiko Arai ◽  
Koichiro Yoshizaki
1977 ◽  
Vol 47 (6) ◽  
pp. 410-417
Author(s):  
J. N. Rapko ◽  
K. Y. Kim

Adsorption characteristics of cotton, 65–35 polyester/cotton, and 100% polyester fabrics were measured by liquid scintillation counting using C14-labeled linear alkylbenzene sulfonate (LAS) as the surfactant. A detergent liquor composed of surfactant, builder, silicate, and hardness ions were used to simulate actual detergent formulations. The effects of water hardness, builder level, temperature, pH, and sulfate and silicate levels on the distribution of LAS between the fabric and the liquor phase were examined. A considerable portion of LAS was found to be adsorbed on the fabrics depending upon the kind of fabric. For a given fabric, hardness ion and builder level are determining factors for adsorption. Detergent builders influence the degree of surfactant adsorption depending on their ability to complex Ca++ and Mg++. Permanent-press finishes were found to cause LAS adsorption to increase relative to corresponding unfinished fabrics. The rate of LAS adsorption under agitation was determined. The amount adsorbed was found to be linear against the logarithm of time. Adsorption “isotherms” were generated for 15-minute data.


2016 ◽  
Vol 7 (14) ◽  
pp. 143-155
Author(s):  
Eldha Sampepana ◽  
Suroto Hadi Saputra

In the manufacture of detergents still using surfactants (which serves as an emulsifier) of crude oil in the form of the AS. (alcohol sulfate) and LAS (linear alkylbenzene sulfonate), where this type of surfactant cannot be degraded by microorganisms when discharged into the environment, causing environmental pollution. Methyl ester sulfonate surfactant is an anionic surfactant which has a composition of C16 - C18 fatty acids are capable of acting against nature deterjensinya, while the C12 - C14 fatty acids contribute to the foaming effect. The purpose of this study was to look for the formulation of methyl ester sulfonate (MES) the right to produce a good detergent by using materials such as methyl ester sulfonate surfactant self-made, methyl ester sulfonate and sodium lauryl market Ester Sulfate (SLS) with a concentration of 15 %, 20 % and 25 %. Detergent results of the study have high detergency ( net ) compared with the detergency of detergent commercial, have a stable emulsion stability, the stability of the foam/foam detergent power made from methyl ester sulfonate surfactant produces less foam, compared with a detergent made from SLS and surfactant SNI 06-4075-1996 standards.


2021 ◽  
pp. 126365
Author(s):  
Na-Kyung Kim ◽  
Sang-Hoon Lee ◽  
Hyeokjun Yoon ◽  
Garam Jeong ◽  
You-Jung Jung ◽  
...  

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