Electric conductivity near the percolation transition of a nonionic water-in-oil microemulsion

被引：15

作者：

Weigert, S ^{[1
]}

Eicke, HF ^{[1
]}

Meier, W ^{[1
]}

机构：

[1] UNIV BASEL,INST PHYS CHEM,CH-4056 BASEL,SWITZERLAND

来源：

PHYSICA A | 1997年 / 242卷 / 1-2期

关键词：

percolation; nonionic microemulsion; electric conductivity;

D O I：

10.1016/S0378-4371(97)00187-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electric conductivity of a nonionic water-in-oil microemulsion has been measured in the presence of small amounts of carrier electrolyte. Two distinct regimes can be distinguished: the conductivity increases linearly for small nanodroplet concentration, while it decreases above a critical value. The qualitative change occurs close to a concentration where the system is known to have formed a system-spanning nonconducting cluster of nanodroplets. This behaviour of the conductivity is shown to agree well with predictions of percolation theory for aggregating charged nanodroplets.

引用

页码：95 / 103

页数：9

共 17 条

[1] INTERFACIAL-TENSIONS AND AGGREGATE STRUCTURE IN C12E5 OIL-WATER MICROEMULSION SYSTEMS [J].