| 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)t?_(?<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20?;_ 时,观察到大量的囊泡结构;当其质量分数为200?;，并加热至60 <€超声波分散时,溶液中囊泡数量急剧减少;DSD-BS-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。 |
| 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 |
| DOI： |
| 分类号: |
| 基金项目:中国石油天然气股份公司重大开发项目(2008 -12 - 2 - 07) |
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| Aggregate morphology of gemini surfactant of alkylbene sulfonatein aqueous solution |
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WANG Yu1,ZHENG Xiao-yu2,LI Dong-wen1,JIANG Qing-zhe2,WU Yun-qiang1
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(1. Exploration and Development Research Institute of Xinjiang Oilfield Branch Company, Karamay 834000, China;2. College of Chemistry and Chemical Engineering in China University of Petroleum, Beijing 102249，China)
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| Abstract: |
| The aggregate morphology of gemini surfactants of alkylbene sulfonate DSDBS-2 was investigated by means of dynamic light-scattering ( D15) , 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 一 15 times critical micellar concentrationT 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. |
| Key words: dynamic light-scattering transmission electron microscopy freeze-fracture transmission electron microscopy aggregate morphology vesicles |
