Shear-induced order in a homopolymer blend with block copolymer surfactant

被引：12

作者：

Nakatani, AI

Sung, LP

Hobbie, EK

Han, CC

机构：

[1] Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.79.4693

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Small-angle neutron scattering has been used to investigate the shear response of a low molecular weight A/B homopolymer blend with A-B diblock-copolymer surfactant. In the pure homopolymer limit, long-wavelength critical fluctuations are sheared apart and the flow stabilizes the disordered phase. Above a threshold block-copolymer composition, however, these fluctuations become enhanced by the shear, implying that the Bow has a destabilizing effect on the disordered phase.

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页码：4693 / 4696

页数：4

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