STABILITY OF EMULSION COMPOSED OF NITROBENZENE/WATER/ SODIUM DODECYL SULFATE BY CONDUCTANCE MEASUREMENT

NI Liang; JIANG Wenhua; HAN Shijun

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STABILITY OF EMULSION COMPOSED OF NITROBENZENE/WATER/ SODIUM DODECYL SULFATE BY CONDUCTANCE MEASUREMENT

更新时间：2025-12-10

- STABILITY OF EMULSION COMPOSED OF NITROBENZENE/WATER/ SODIUM DODECYL SULFATE BY CONDUCTANCE MEASUREMENT
- CIESC Journal Issue 12, (2001)
- 作者机构：
  
  浙江大学化学系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 December 2001，
  
  Published：25 December 2001
- 稿件说明：
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NI Liang, JIANG Wenhua, HAN Shijun. STABILITY OF EMULSION COMPOSED OF NITROBENZENE/WATER/ SODIUM DODECYL SULFATE BY CONDUCTANCE MEASUREMENT[J]. CIESC Journal, 2001, (12).
DOI：

NI Liang, JIANG Wenhua, HAN Shijun. STABILITY OF EMULSION COMPOSED OF NITROBENZENE/WATER/ SODIUM DODECYL SULFATE BY CONDUCTANCE MEASUREMENT[J]. CIESC Journal, 2001, (12). DOI：

摘要

制备了不同组成的硝基苯 /水 /十二烷基硫酸钠乳状液

用电导法测定了含正己醇和不含正己醇条件下乳状液富油相不同时间的电导率 .一方面

提出了增比电导率κr 新概念

给出了κr 及其随时间t的变化率(dκr/dt)与时间的关系曲线

并由dκr/dt～t曲线求得该曲线上的极值点tmax和 (dκr/dt) max

从而定量判断乳状液的稳定性 ;另一方面

从乳状液液滴的沉降、絮凝和聚并等不稳定因素出发提出了乳状液分层动力学模型

由此对κr 变化敏感区进行动力学分析

求得了乳状液分层速率常数

从而分析了乳状液的稳定性 .处理结果表明采用两种不同方法分析乳状液的稳定性是令人满意的

Abstract

Emulsions composed of nitrobenzene/water/sodium dodecyl sulfate (SDS) were prepared at different compositions.Specific conductivities in the oil-rich phase of emulsions were measured at different times in presence and without presence of hexanol.In order to find the relationship between stability and specific conductivities of emulsions

a new concept of a incremental ratio of specific conductivity ( κ r) and a dynamic model of creaming process were proposed.Stability of emulsion was discussed by employing the relationship of the incremental ratio of specific conductivity with time and the dynamic parameters of creaming process.The results show that the stability of emulsion decreased with the increase of the incremental ratio of specific conductivity.In addition

the values of the changing ratio κ r with time

d κ r/d t

at different times were calculated and the maximum values of d κ r/d t were obtained by using the plots of d κ r/d t against time.The values of (d κ r/d t ) max and corresponding t max were also used to discuss the stability of emulsion.

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