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W/O与O/W,W/O与双连续结构微乳液的界面电性质   总被引:2,自引:0,他引:2       下载免费PDF全文
刘天晴  魏逊  郭荣 《化学学报》2002,60(4):633-638
无探针伏安法和电容法测定结果表明,在质量比H_2O/n-C_5H_(11)OH = 50/50条件下,SDS总含量<3%时,上相呈W/O结构,下相呈O/W结构,随着体系SDS 总含量的增大,界面上SDS量增加,界面电势ΔE、界面电容C、界面电荷传递电流 i_p均增加,而界面电阻率ρ_i则减小;当体系 SDS总含量≥3%时,上相呈W/O结构 ,下相呈双边续结构,各界面电性质变化幅度均变缓。  相似文献
2.
A method for estimating the interfacial potential difference in electromembrane systems with alkaline solutions of amino acids is developed. Systems with MA-41 anion-exchange membranes and aqueous sodium hydroxide solutions with glycine are investigated. It is found that in solutions with alkali concentrations greater than 0.010 M, the interfacial potential difference decreases logarithmically, i.e., in agreement with the Donnan relationship. At the same time, in weakly alkaline solutions of glycine, in which the amino-acid concentration exceeds that of the alkali, an increase in the interfacial potential difference is observed. This may be due to a disturbance of the equilibrium of the protolytic reaction in the membrane on the side where hydroxide ions form. Original Russian Text ? O.V. Bobreshova, A.V. Parshina, K.A. Polumestnaya, N.G. D’yachkova, L.A. Zagorodnykh, 2007, published in Elektrokhimiya, 2007, Vol. 43, No. 11, pp. 1395–1399.  相似文献
3.
本文提出一种新的电化学界面电位传感器构建方法.  相似文献
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