Interaction of a zwitterionic surfactant with synthetic clays in aqueous suspensions: A multinuclear magnetic resonance study

被引：8

作者：

Grandjean, J ^{[1
]}

机构：

[1] Univ Liege, Inst Chim B6A, COSM, B-4000 Liege, Belgium

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2001年 / 239卷 / 01期

关键词：

saponite; laponite; surfactant; H-1; Li-7; C-13; N-14; Na-23; Cl-35; NMR; double quantum filtering NMR;

D O I：

10.1006/jcis.2001.7556

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 [物理化学]; 081704 [应用化学];

摘要：

H-1 and C-13 NMR Signal assignment of laurylamidopropylbetain has been obtained from 2D COSY, HETCOR, and HMBC pulse sequences. C-13 and N-14 NMR relaxation data show interaction of the polar head of the surfactant with low-charged clays dispersed in aqueous solution. The sodium cation exchange rate between the solid surface and the bulk is strongly affected by the charge of the clay layer, as seen from Na-23 NMR data. Such an exchange is also observed with clay suspended in sodium dodecyl sulfate solutions. (C) 2001 Academic Press.

引用

页码：27 / 32

页数：6

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