ROTATIONAL BROWNIAN-MOVEMENT OF POLY(TETRAFLUOROETHYLENE) COLLOIDS AS STUDIED BY THE CONDUCTANCE STOPPED-FLOW TECHNIQUE

被引：10

作者：

OKUBO, T ^{[1
]}

SHIMIZU, T ^{[1
]}

机构：

[1] DAIKIN IND LTD,DEPT RES & DEV,SETTSU 566,OSAKA,JAPAN

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1990年 / 135卷 / 01期

关键词：

D O I：

10.1016/0021-9797(90)90313-D

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The rotational relaxation time and rotational diffusion coefficient (Dr) for ellipsoidal colloids of poly(tetrafluoroethylene) in aqueous suspension are determined conveniently and precisely by the conductance stopped-flow technique. The Dr values observed (13-21 s-1) are smaller than those calculated by Perrin's equation (80 s-1). The deviation can be explained by the significant contribution of the Debye-Hückel double-layer thickness (Debye screening length) in the absence of foreign salt. © 1990.

引用

页码：300 / 303

页数：4