Coexistence curves of critical nonaqueous microemulsions of (AOT + DMA + nonane) and (AOT + DMA + octane) |
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| Institution: | 1. College of Chemistry and Environment Science, Nanjing Normal University, Nanjing, Jiangsu 210097, China;2. Department of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China;3. Department of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;1. Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China;2. Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, PR China |
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| Abstract: | The coexistence curves of (T, n), (T, ?) and (T, ψ) (n, ?, ψ are the refractive index, the volume fraction, and the effective volume fraction, respectively) for two ternary nonaqueous microemulsion systems have been determined at constant pressure and a constant molar ratio ω of DMA to AOT. The critical exponent β and the critical amplitude B have been deduced, and the values of β were consistent with the theory of 3D-Ising in a region sufficiently close to the critical temperature. The results show that the coexistence curves have been successfully described by the Wegner equation and the expression for the diameter. |
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