Lamellar lyomesophases under shear as studied by deuterium nuclear magnetic resonance

被引：53

作者：

Lukaschek, M

Muller, S

Hansenhindl, A

Grabowski, DA

Schmidt, C

机构：

[1] UNIV FREIBURG,INST MAKROMOLEK CHEM,D-79104 FREIBURG,GERMANY

[2] UNIV FREIBURG,FREIBURGER MAT FORSCHUNGSZENTRUM,D-79104 FREIBURG,GERMANY

来源：

COLLOID AND POLYMER SCIENCE | 1996年 / 274卷 / 01期

关键词：

NMR; nonionic surfactant; lamellar phase; shear-induced structure; LYOTROPIC LIQUID-CRYSTALS; RHEOLOGY; PHASE;

D O I：

10.1007/BF00658902

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 lamellar phases of two aqueous ethylene oxide surfactants, tetra(ethylene oxide) dodecyl ether and hexa(ethylene oxide) dodecyl ether, have been investigated by deuterium nuclear magnetic resonance spectroscopy during shear. The evolution of the shear-induced NMR line shapes and their dependence on surfactant concentration, shear geometry and shear history is analyzed. Two of three previously described shear-induced states (Diat O, Roux D, Nallet F (1993) J Phys II France 3: 1427-1452), namely the state of aligned lamellae with the layer normal parallel to the velocity gradient, which occurs at low shear rates, and the vesicular state at intermediate shear rates are found and identified by their characteristic NMR line shapes.

引用

页码：1 / 7

页数：7

共 23 条

[1] PHASE EQUILIBRIA OF DODECYLHEXAOXYETHYLENE GLYCOL MONOETHER IN WATER [J].