氢氧化钠对重烷基苯磺酸钠水溶液/油体系界面张力的影响

doi:10.13218/j.cnki.csdc.2014.04.045

日用化学工业 ›› 2014, Vol. 44 ›› Issue (4): 200-203.doi: 10.13218/j.cnki.csdc.2014.04.045

氢氧化钠对重烷基苯磺酸钠水溶液/油体系界面张力的影响

刘必心¹, 侯吉瑞², 张宁³

1.中国石化石油化工科学研究院,北京 100083;
2.中国石油大学(北京) 提高采收率研究院,北京 102249;
3.中海油能源发展股份有限公司工程技术分公司,天津 300452

收稿日期:2013-11-29 出版日期:2014-04-22 发布日期:2019-04-09
作者简介:刘必心(1982-),男,工程师,博士,电话:15210877581,E-mail:liubixin2008@163.com。
基金资助:
国家973计划资助项目(NO.2005cb221303)

Effect of NaOH on interfacial tension between heavy alkylbenzene sulfonates aqueous solution and oil

LIU Bi-xin¹, HOU Ji-rui², ZHANG Ning³

1.Sinopec Research Institute of Petroleum Processing,Beijing 100083,China;
2.Enhanced Oil Recovering Research Center,China University of Petroleum,Beijing 102249,China;
3.Ener Tech-Drilling & Production Co.of CNOOC,Tianjin 300452,China

Received:2013-11-29 Online:2014-04-22 Published:2019-04-09

摘要/Abstract

摘要： 以不含酸的正壬烷作为油相,研究了氢氧化钠用量对重烷基苯磺酸钠水溶液/油体系界面张力的影响。界面张力测试结果表明,界面张力随氢氧化钠质量分数的增加而降低,当重烷基苯磺酸钠的质量分数为0.3%且氢氧化钠质量分数为0.8%时,油/水界面张力可以达到超低(10^-3 mN·m^-1数量级)。利用动态光散射实验,研究了氢氧化钠对降低界面张力的影响,氢氧化钠的加入可以使水溶性较差的重烷基苯磺酸转化成重烷基苯磺酸根,并且从混合胶束中释放出来,更多的表面活性剂单体迁移到界面,有利于界面张力的进一步降低。

关键词: 重烷基苯磺酸钠, 氢氧化钠, 界面张力, 胶束

Abstract: Using acid-free nonane as oil phase,experiments were conducted to study the effect of NaOH dosage on the interfacial tension of heavy alkylbenzene sulfonates aqueous solution/oil system.Interfacial tension test results showed that,the interfacial tension decreases with increase of NaOH mass fraction.When the mass fraction of heavy alkylbenzene sulfonates is 0.3% and the mass fraction of NaOH is 0.8%,the oil-water interfacial tension could achieve an ultra low value (10^-3 mN·m^-1 order of magnitude).Using dynamic light scattering experiments,the effect of NaOH on reduction of interfacial tension were examined.NaOH could turn the heavy alkylbenzene sulfonic acids that has poor water solubility into heavy alkylbenzene sulfonates,and more surfactant molecules could be released from the mixed micelles and migrate to the interface,which is favorable to further reduction of the interfacial tension.

Key words: heavy alkylbenzene sulfonates, NaOH, interfacial tension, micelle

中图分类号:

TQ423.12

刘必心, 侯吉瑞, 张宁. 氢氧化钠对重烷基苯磺酸钠水溶液/油体系界面张力的影响[J]. 日用化学工业, 2014, 44(4): 200-203.

LIU Bi-xin, HOU Ji-rui, ZHANG Ning. Effect of NaOH on interfacial tension between heavy alkylbenzene sulfonates aqueous solution and oil[J]. China Surfactant Detergent & Cosmetics, 2014, 44(4): 200-203.

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氢氧化钠对重烷基苯磺酸钠水溶液/油体系界面张力的影响

Effect of NaOH on interfacial tension between heavy alkylbenzene sulfonates aqueous solution and oil

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