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Citation: PENG Chun-Yu, ZHOU Hai-Hui, ZENG Wei, JIAO Shu-Qiang, LUO Sheng-Lian, KUANG Ya-Fei. Studies on the Conductivity of Reverse Microemulsion[J]. Acta Physico-Chimica Sinica, ;2006, 22(04): 409-413. doi: 10.3866/PKU.WHXB20060404 shu

Studies on the Conductivity of Reverse Microemulsion

1.
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China

Received Date: 10 October 2005
Available Online: 10 April 2006

Surfactant p-octyl polyethylene glycol phenyl ether (Triton X-100) or cetyltrimethylammonium bromide (CTAB) was mixed with n-hexane, n-hexanol, and water for preparing reverse microemulsion. The effects of H+ concentration in water phase, concentrations of surfactant and cosurfactant on the microemulsion conductivity were studied. The results demonstrated that increasing H+ concentration in water phase enhanced the conductivity of reverse microemulsion greatly. The conductivity of microemulsion could be increased by 1~2 orders of magnitude as the H+ concentration increased from 1 mol•L-1 to 10 mol•L-1. When the H+ concentration of water phase was 10 mol•L-1, the conductivity of microemulsion enhanced as the water volume increased. The conductivity of these microemulsion increased to about 3200 μS•cm-1 when the volume ratio of water to oil was 3:10. The conductivity of microemulsion was enhanced as the Triton X-100 concentration increased, while it decreased with the increase of the CTAB concentration. The conductivity of non-ionic microemulsion decreased with the increase of cosurfactant concentration, while the conductivity of ionic microemulsion showed a camel shape change with the cosurfactant concentration.
- Reverse microemulsion;Conductivity;H+ concentration;Surfactant;Cosurfactant;Temperature
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