DEPLETION LAYER MEASUREMENTS USING NUCLEAR-MAGNETIC-RESONANCE FOR SILICA DISPERSIONS WITH NONADSORBING POLY(STYRENE SULFONATE)

被引：23

作者：

COSGROVE, T

OBEY, TM

RYAN, K

机构：

[1] School of Chemistry, University of Bristol, Bristol, BS8 1TS, Cantock's Close

来源：

COLLOIDS AND SURFACES | 1992年 / 65卷 / 01期

关键词：

DEPLETION; NUCLEAR MAGNETIC RESONANCE; POLYELECTROLYTE; SODIUM POLY(STYRENE SULFONATE);

D O I：

10.1016/0166-6622(92)80169-3

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：

Nuclear magnetic resonance relaxation times have been used to estimate the depletion layer thickness for non-adsorbing polyelectrolytes in silica dispersions. The layer thicknesses have been estimated using a simple square-well model for the depletion zone. The results show an increase in the depletion layer thickness both with increasing molecular weight and decreasing equilibrium polymer concentration.

引用

页码：1 / 7

页数：7

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[1] DIRECT OPTICAL OBSERVATION OF INTERFACIAL DEPLETION LAYERS IN POLYMER-SOLUTIONS [J].