A small-angle neutron scattering study of adsorbed poly(ethylene oxide) on laponite

被引：133

作者：

Nelson, A ^{[1
]}

Cosgrove, T ^{[1
]}

机构：

[1] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England

来源：

LANGMUIR | 2004年 / 20卷 / 06期

关键词：

D O I：

10.1021/la035268t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of poly(ethylene oxide) (PEO) on synthetic anisotropic clay particles (Laponite) has been investigated as a function of the molecular weight. Contrast variation small-angle neutron scattering (SANS) measurements were used to characterize the distribution and adsorbed amount of polymer on the particles. These experiments show not only that polymer is present on the face of the clay particle but that it also extends or "wraps" over the edges. The edge layer was thicker than the face layer for all the molecular weights studied. The polymer layers are unusually thin, with a thickness and adsorbed amount that show little variation with molecular weight.

引用

页码：2298 / 2304

页数：7

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