Shear-induced mesostructure in nanoplatelet-polymer networks

被引：34

作者：

Lin-Gibson, S ^{[1
]}

Schmidt, G ^{[1
]}

Kim, H ^{[1
]}

Han, CC ^{[1
]}

Hobbie, EK ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2003年 / 119卷 / 15期

关键词：

D O I：

10.1063/1.1609972

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 shear response of a model polymer-clay gel is measured using small-angle neutron and light scattering, optical microscopy, and rheometry. As the flow disrupts the transient network that forms between clay and polymer, coupling between composition and stress leads to the formation of a macroscopic domain pattern, while the clay platelets orient with their surface normal parallel to the direction of vorticity. We discuss similarities with shear-induced structural transitions observed in other complex fluids, and we offer a physical explanation for the orientation of the clay platelets. (C) 2003 American Institute of Physics.

引用

页码：8080 / 8083

页数：4

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