NONANOMALOUS DIFFUSION IN VYCOR POROUS-GLASS

被引：25

作者：

GUO, YH ^{[1
]}

LANGLEY, KH ^{[1
]}

KARASZ, FE ^{[1
]}

机构：

[1] UNIV MASSACHUSETTS,DEPT PHYS & ASTRON,AMHERST,MA 01003

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.50.3400

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The diffusion of polystyrene in solution in the pore space of Vycor porous glass has been studied by the method of dynamic light scattering. In contrast to diffusion rates reported by others, we find results that are completely consistent with our previous measurements in other porous glass systems and that are in agreement with predictions of hydrodynamic theories and a model of chaotically connected pores. The anomalously slow diffusion of azobenzene in Vycor reported by others is possibly attributable to the residual effects of surface adsorption, which we have carefully eliminated in our experiment.

引用

页码：3400 / 3403

页数：4

共 29 条

[1]

[Anonymous], 1979, SCALING CONCEPTS POL

[2]

Berne B J, 1976, DYNAMIC LIGHT SCATTE

[3] DYNAMIC LIGHT-SCATTERING-STUDIES OF POLYMER DIFFUSION IN POROUS MATERIALS - LINEAR POLYSTYRENE IN POROUS-GLASS [J].