SDS/BA/H~2O体系的结构与电学特性

SDS/BA/H~2O体系电导率、反离子缔合度和电容测定表明：在O/W微乳液区域，电导率、反离子缔合度和电容值都较小；在恒定m(SDS)/m(H~2O)下，随着BA含量的增加，电导率、反离子缔合度和电容值先增加，达到一最大值后又逐渐下降。在双连续区域，为链式导电机理，电导率、反离子缔合度、电阻和电容值几乎不随水含量变化。根据加权最小二乘法回归，O/W球形胶束区域的电容值与各物理化学特性数值(κ,β,N,D,ε,χ)的关系为：C/μF=1.036×10^-^8(1-β)Z~sκD^-^1+0.03466ε~1x~1=0.09677ε~2x~2。

Structure and electric properties of SDS/BA/H~2O system

The results of determination of the conductivity, the association degree of counter-ion and the capacitance indicate that their values are relatively small in the O/W microemulsion for SDS/BA/H~2O system. At the constant weight ratio of SDS to water, the conductivity, the association degree of counter-ion and the capacitance first increase up to the maximum and then begin to decrease with BA content increasing. In the bicontinuous region, there is a chain conductive mechanism. The conductivity, the association degree and the capacitance change scarcely with the water content. The relation of the capacitance with the properties of physical chemistry in O/W spherical microemulsion region by a least-mean square method is C/μ F=1.036×10^-^8(1-β)Z~sκD^-^1 + 0.03466ε~1x~1 = 0.09677ε~2x~2.