| 二元液液系统界面张力 |
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| 引用本文： | 宋瑛,田宜灵,肖衍繁,任晓文,乔瑞平.二元液液系统界面张力[J].化工学报,1999,50(5):620-628. |
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| 作者姓名： | 宋瑛 田宜灵 肖衍繁 任晓文 乔瑞平 |
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| 作者单位： | 天津大学化学系!天津300072,天津大学化学系!天津300072,天津大学化学系!天津300072,天津大学化学系!天津300072,天津大学化学系!天津300072 |
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| 摘 要： | 采用悬滴技术分别测量了正己烷-水、正庚烷-水、正辛烷-水、正壬烷-水和正己醇-水、正庚醇-水、正辛醇-水、正壬醇-水8个系统常压下温度为293.15～343.15 K之间的界面张力.讨论了界面张力与温度的关系,发现烷烃-水系统界面张力随温度的升高呈直线下降趋势,而醇-水系统的界面张力则随温度的升高呈先增加后又变小的规律.另外,对目前广受关注的、估算界面张力的N-A法作了进一步的验证和讨论.
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| 关 键 词： | 界面张力 悬滴法 烷烃 脂肪醇 N-A估算法 |
INTERFACIAL TENSIONS OF BINARY LIQUID-LIQUID SYSTEMS |
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| Song Ying,Tian Yiling,Xiao Yanfan,Ren Xiaowen,Qiao Ruiping.INTERFACIAL TENSIONS OF BINARY LIQUID-LIQUID SYSTEMS[J].Journal of Chemical Industry and Engineering(China),1999,50(5):620-628. |
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| Authors: | Song Ying Tian Yiling Xiao Yanfan Ren Xiaowen Qiao Ruiping |
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| Abstract: | The interfacial tensions of binary liquid-liquid systems ( n-heptane+water), ( n-hexane+water) , (n-octane+water) , (n-nonane + water), (n-heptanol water) , (n-hexanol+water) , (n-octanol+water) , (n- nonanol + water) in the temperature range from 298.15 K to 343.15 K at constant pressure were measured by the pendant drop method. The interfacial tensions of aliphatic hydrocarbon - water systems decreased linearly with higher temperature, but those of aliphatic alcohol - water systems increased, then decreased with higher temperature. In addition, the N - A method used for estimating interfacial tensions was discussed further, which is paid a good deal of attentionto and is one of the purposes of this research. |
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| Keywords: | interfacial tension pendant drop aliphatic hydrocarbon aliphatic alcohol N-A method |
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