Experimental Study of the Effect of Strong Alkali on Lowering the Interfacial Tension of Oil/Heavy Alkylbenzene Sulfonates System

Experimental studies were conducted to explore the fundamental mechanisms of alkali to lower the interfacial tension of oil/heavy alkylbenzene sulfonates （HABS） system. Sodium hydroxide was used as the strong alkali chemical to investigate the interracial tension （IFT） of oil/HABS system. The influe...

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Published in:Chinese journal of chemistry 2011-11, Vol.29 (11), p.2315-2319
Main Author: 刘必心 侯吉瑞 唐红娇 徐海霞 郑自刚
Format: Article
Language:English
Subjects:
ABS系统
Adsorption
alkali metal
heavy alkylbenzene sulfonates
interfacial tension
micelles
partition coefficient
Surfactants
低界面张力
实验
强碱
盐体
表面活性剂体系
表面活性剂胶束
重烷基苯磺酸盐
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cited_by cdi_FETCH-LOGICAL-c3817-2dd4623af52e3dfe5d9d0564e2ab99834b28a06671d55964928aa1cdbecaa8ab3
cites cdi_FETCH-LOGICAL-c3817-2dd4623af52e3dfe5d9d0564e2ab99834b28a06671d55964928aa1cdbecaa8ab3
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container_issue 11
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container_title Chinese journal of chemistry
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creator 刘必心 侯吉瑞 唐红娇 徐海霞 郑自刚
description Experimental studies were conducted to explore the fundamental mechanisms of alkali to lower the interfacial tension of oil/heavy alkylbenzene sulfonates （HABS） system. Sodium hydroxide was used as the strong alkali chemical to investigate the interracial tension （IFT） of oil/HABS system. The influences of salt and alkali on the interracial activity were studied by the measurement of interfacial tension and partition coefficient. Moreover, the al- kali/surfactant solutions were measured by dynamic laser scattering. The results showed that compared with the salt, the function of alkali to lower the interfacial tension and improve partition coefficient is more significant. The mi- celles formed by surfactants could be disaggregated because of adding alkali, so the size of micelles decreases and the number of mono-surfactants increases, then more surfactant molecules move to the interface of oil/surfactant system and the adsorption of surfactants at oil-water interfaces increases, which can lead to the decrease of IFT.
doi_str_mv 10.1002/cjoc.201180397
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subjects ABS系统
Adsorption
alkali metal
heavy alkylbenzene sulfonates
interfacial tension
micelles
partition coefficient
Surfactants
低界面张力
实验
强碱
盐体
表面活性剂体系
表面活性剂胶束
重烷基苯磺酸盐
title Experimental Study of the Effect of Strong Alkali on Lowering the Interfacial Tension of Oil/Heavy Alkylbenzene Sulfonates System
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