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Shear-Induced Ordering in a Homopolymer Blend With Block-Copolymer Surfactant.


pdf icon Shear-Induced Ordering in a Homopolymer Blend With Block-Copolymer Surfactant. (236 K)
Nakatani, A. I.; Sung, L. P.; Hobbie, E. K.; Han, C. C.

Physical Review Letters, Vol. 79, No. 23, 4693-4696, December 8, 1997.

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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.