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Interfacial Properties of Alkylbenzene Sulfonates Ternary Mixtures

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Published/Copyright: May 13, 2015
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Abstract

Dynamic interfacial tension (IFT) behaviors of dialkylbenzene sulfonate (DAS)/heavy alkylbenzene sulfonate (HABS)/dodecylbenzene sulfonate (LAS) ternary mixture solutions against a homologous series of alkanes were studied. On the basis of our experimental results, one can find that the lipophilic ability of DAS was stronger than that of HABS. At the lower content of LAS, the ternary system was oil soluble; at the higher content of LAS, the ternary system was water soluble. An IFT in the 103 mN/m range can be obtained for the ternary system against long-chain alkanes (decane, dodecane) under the condition that the content of LAS was 30 %. A dynamic IFT of 104 mN/m order of magnitude was observed against decane. The hydrophilic-lipophilic ability of the surfactant plays an important role in dynamic IFT behavior. With increasing content of LAS, the alkane carbon number of ternary mixture solutions for producing the lower IFT had a tendency to lower.

Kurzfassung

Die dynamischen Grenzflächenspannungen (ITF) ternärer Mischungen aus Dialkylbenzensulfonat (DAS), schweres Alkylbenzensulfonat (HABS), Dodecylbenzensulfonat (LAS) gegen eine homologe Alkanreihe wurden untersucht. Unsere Ergebnisse zeigten, dass die Lipophilie von DAS stärker ausgeprägt ist als die von LAS. Bei geringerem Gehalt an LAS war das ternäre System öllöslich, bei höherem LAS-Gehalt war es wasserlöslich. Eine Grenzflächenspannung in der Größenordnung von 103 mN/m wurde für ternäre Systeme mit langkettigen Alkanen (Decan, Dodecan) erhalten, sofern der Gehalt an LAS 30 % beträgt. Eine ITF in der Größenordnung von 104 mN/m wurde mit Decan erhalten. Die hydrophilen-lipophilen Eigenschaften des Tensids sind für die dynamischen Grenzflächenspannungen von großer Bedeutung. Mit steigendem LAS-Gehalt hat die Anzahl der C-Atome des Alkans in der ternären Mischung, die für die Erzeugung niedriger ITFs nötig ist, eine abnehmende Tendenz.


* Correspondence address, Dr Jinping Niu, China Research Institute of Daily Chemical Industry, 34# Wenyuan Str., Taiyuan, Shanxi Province, P. R. China: 030001, Tel.: 0 86-3 51-4 19 28 78, Fax: 0 86-3 51-4 04 08 02, E-Mail:

Tang Li was born in 1984. Presently she is working for Master degree at China Research Institute of Daily Chemical Industry. Her main research field is the synthesis and the study of properties of dialkylbenzene sulfonate surfactants.

Jinping Niu was born in 1966. Her research interests are sulfonation or sulfation of organic materials.

Xiaochen Liu is engineer of China Research Institute of Daily Chemical Industry. His research interest is synthesis and investigation of novel sulfonate.

Xiaoyu Wang is engineer of China Research Institute of Daily Chemical Industry. Her research interest is synthesis and application of surfactants.


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Received: 2014-01-16
Accepted: 2014-08-11
Published Online: 2015-05-13
Published in Print: 2015-05-15

© 2015, Carl Hanser Publisher, Munich

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