| 双子烷基苯磺酸盐在水溶液中的聚集形态 |
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| 引用本文： | 王雨,郑晓宇,李东文,蒋庆哲,吴运强.双子烷基苯磺酸盐在水溶液中的聚集形态[J].中国石油大学学报(自然科学版),2009,33(6). |
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| 作者姓名： | 王雨 郑晓宇 李东文 蒋庆哲 吴运强 |
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| 作者单位： | 1. 新疆油田分公司,勘探开发研究院,新疆,克拉玛依,834000
2. 中国石油大学,化学科学与工程学院,北京,102249 |
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| 基金项目： | 中国石油天然气股份公司重大开发项目 |
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| 摘 要： | 采用动态光散射(DLS) 、透射电镜(TEM)以及冷冻刻蚀透射电镜(FF-TEM)研究双子烷基苯磺酸盐DSDBS-2在水溶液中的聚集行为.结果表明: DSDBS-2的质量分数在(10～15)w_(cmc)(w_(cmc)为DSDBS-2临界胶束浓度)时,溶液中有大量的球状胶束、棒状胶束、椭球状胶束和囊泡共存,微粒粒径在50～75 nm之间居多;当其质量分数为20w_(cmc)时,观察到大量的囊泡结构;当其质量分数为200w_(cmc)并加热至60 ℃超声波分散时,溶液中囊泡数量急剧减少;DSDBS-2在低质量分数时就形成囊泡聚集体与其独特的结构有关.
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| 关 键 词： | 动态光散射 透射电镜 冷冻刻蚀电镜 聚集体形态 囊泡 |
Aggregate morphology of gemini surfactant of alkylbene sulfonate in aqueous solution |
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| WANG Yu,ZHENG Xiao-yu,LI Dong-wen,JIANG Qing-zhe,WU Yun-qiang.Aggregate morphology of gemini surfactant of alkylbene sulfonate in aqueous solution[J].Journal of China University of Petroleum,2009,33(6). |
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| Authors: | WANG Yu ZHENG Xiao-yu LI Dong-wen JIANG Qing-zhe WU Yun-qiang |
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| Abstract: | The aggregate morphology of gemini surfactants of alkylbene sulfonate DSDBS-2 was investigated by means of dynamic light-scattering (DLS), transmission electron microscopy(TEM)and freeze-fracture transmission electron microscopy (FF-TEM). The results show that when the mass fraction of DSDBS-2 is 10-15 times critical micellar concentration, spheroidal micelles, rod-micelles,prolate-ellipsoid micelles and vesicles coexist, and the particle size range is mainly from 50 to 75 nm. Many vesicles are formed when the mass fraction of DSDBS-2 is 20 times critical micellar concentration. By heating to 60 ℃ and dispersing with ultrasonic, the amount of vesicles reduced largely when the mass fraction of DSDBS-2 is 200 times critical micellar concentration. The special aggregation shape of DSDBS-2 formed at lower concentration is correspond to its unique structure. |
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| Keywords: | dynamic light-scattering transmission electron microscopy freeze-fracture transmission electron microscopy aggregate morphology vesicles |
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