Interactions between methyl cellulose and sodium dodecyl sulfate in aqueous solution studied by single molecule fluorescence correlation spectroscopy

被引：19

作者：

Bosco, S. John

Zettl, H.

Crassous, J. J.

Ballauff, M.

Krausch, G.

机构：

[1] Univ Bayreuth, D-95440 Bayreuth, Germany

[2] Univ Bayreuth, D-95440 Bayreuth, Germany

来源：

MACROMOLECULES | 2006年 / 39卷 / 25期

关键词：

D O I：

10.1021/ma0616920

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The interactions between the anionic surfactant sodium dodecyl sulfate (SDS) and a hydrophobically modified nonionic polymer, methyl cellulose (MC), have been investigated in aqueous solution by fluorescence correlation spectroscopy (FCS) and rheology. FCS is used to follow the dynamics of different populations of single aggregates. We are able to follow the solution properties over a wide concentration range of both polymer and surfactant. At constant MC concentration the diffusion time of single aggregates increases gradually up to a certain SDS concentration and decreases to a minimum when the SDS concentration is further increased. This behavior coincides with the behavior of the zero shear viscosity. A model is proposed to explain the effect of surfactant concentration on polymer conformation and aggregation size.

引用

页码：8793 / 8798

页数：6

共 59 条

[1] HYDROXYPROPYLMETHYLCELLULOSE-ANIONIC SURFACTANT INTERACTIONS IN AQUEOUS SYSTEMS [J].