W/O与O/W,W/O与双连续结构微乳液的界面电性质 |
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引用本文: | 刘天晴,魏逊,郭荣.W/O与O/W,W/O与双连续结构微乳液的界面电性质[J].化学学报,2002,60(4):633-638. |
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作者姓名: | 刘天晴 魏逊 郭荣 |
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作者单位: | 扬州大学理学院化学系,扬州,225002 |
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基金项目: | 国家自然科学基金 (No .2 0 0 730 38)资助项目 |
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摘 要: | 无探针伏安法和电容法测定结果表明,在质量比H_2O/n-C_5H_(11)OH = 50/50条件下,SDS总含量<3%时,上相呈W/O结构,下相呈O/W结构,随着体系SDS 总含量的增大,界面上SDS量增加,界面电势ΔE、界面电容C、界面电荷传递电流 i_p均增加,而界面电阻率ρ_i则减小;当体系 SDS总含量≥3%时,上相呈W/O结构 ,下相呈双边续结构,各界面电性质变化幅度均变缓。
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关 键 词: | 伏安法 微乳 电荷传递 电阻率 电容 |
修稿时间: | 2001年8月3日 |
Interfacial Electric Properties of W/O and O/W, W/O and Bicontinuous Microemulsions |
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Institution: | Department of Chemistry, Yangzhou University,Yangzhou(225002) |
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Abstract: | The results of voltammetry without any probe and capacitance measurement show that at the weight ratio of H_2O/n-C_5H_(11)OH = 50/50, when total SDS concentration is less than 3%, the upper phase takes on the W/O structure and the lower phase takes on the O/W structure. With the increase of the total SDS content, increase the amount of SDS at the interface, interfacial potential ΔE, interfacial capacitance C, and interfacial charge-transfer current i_p, while decreases the interfacial resistivity ρ_i; after SDS total content reaches 3%, the upper phase takes on the W/O structure and the lower phase takes on the bicontinuous structure, the changes of all the electric properties of the interface slow down. |
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Keywords: | interfacial potential interfacial capacitance interfacial charge transfer current interfacial resistivity microemulsion |
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