- Author
-
Nakatani, A. I.
|
Sung, L. P.
|
Hobbie, E. K.
|
Han, C. C.
- Title
- Shear-Induced Ordering in a Homopolymer Blend With Block-Copolymer Surfactant.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
-
Physical Review Letters,
Vol. 79,
No. 23,
4693-4696,
December 8, 1997
- Distribution
- FOR MORE INFORMATION CONTACT: URL: http://link.aps.org/abstract/PRL/v79/p4693
- Keywords
-
copolymers
|
surfactants
|
homopolymer blend
- Abstract
- 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 flow has a destabilizing effect on the disordered phase.