| 表面活性剂亲水-亲油能力对动态界面张力的影响 |
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| 引用本文： | 张路,罗澜,赵濉,俞稼镛.表面活性剂亲水-亲油能力对动态界面张力的影响[J].物理化学学报,2001,17(1). |
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| 作者姓名： | 张路 罗澜 赵濉 俞稼镛 |
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| 作者单位： | 中国科学院感光化学研究所 |
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| 基金项目： | 国家重点研究基础规划资助 |
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| 摘 要： | 当两个不互溶的液相接触时 ,如果其中一相或两相含有表面活性物质 ,就可能产生动态界面张力 .两相间的界面张力随时间连续变化 ,直到平衡为止 .在到达平衡的过程中 ,经常通过一个最低值 .酸 性油 /碱水体系也会出现类似现象 .England和 Berg1]把动态界面张力解释为表面活性物质在界面上累积的结果 ,并观察到 1,5-戊二醇由白油向水 中传质时存在明显的吸附-脱附位垒 .Rubin和 Radke2]首次给出了解释酸性原油与碱水溶液接触时产生动态界面张力的物理模型 ,他们提出在油水界面上存在一个表面活性物质的脱附位垒 ,原油中的酸性物质与氢氧化…
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| 关 键 词： | 动态界面张力 吸附-脱附位垒 亲水-亲油能力 |
Effect of Hydrophilic- Lipophilic Ability of Surfactant on Dynamic Interfacial Tensions |
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| Zhang Lu Luo Lan Zhao Sui Yu Jia- Yong.Effect of Hydrophilic- Lipophilic Ability of Surfactant on Dynamic Interfacial Tensions[J].Acta Physico-Chimica Sinica,2001,17(1). |
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| Authors: | Zhang Lu Luo Lan Zhao Sui Yu Jia- Yong |
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| Abstract: | The dynamic interfacial tensions between hydrocarbons and solutions of surfactants having different hydrophilic- lipophilic ability are measured.The effects of ionic strength and alkyl chain carbon- number on dynamic interfacial tensions are also studied.It is found that adsorption- desorption barriers are connected with the hydrophilic- lipophilic ability of surfactants.There exists a large or small adsorption- desorption barrier to the transfer of surfactant having strong hydrophilic or lipophilic ability from water to oil.The influences of ionic strength and alkyl chain carbon- number on adsorption- desorption barriers are discussed. |
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| Keywords: | Dynamic interfacial tension Adsorption- desorption barrier Hydrophilic- lipophilic ability |
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