SHEAR-INDUCED ORDER IN A HOMOPOLYMER BLEND WITH BLOCK-COPOLYMER SURFACTANT

Authors
NAKATANI AI SUNG LP HOBBIE EK HAN CC
Citation
Ai. Nakatani et al., SHEAR-INDUCED ORDER IN A HOMOPOLYMER BLEND WITH BLOCK-COPOLYMER SURFACTANT, Physical review letters, 79(23), 1997, pp. 4693-4696
Citations number
28
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
79
Issue
23
Year of publication
1997
Pages
4693 - 4696
Database
ISI
SICI code
0031-9007(1997)79:23<4693:SOIAHB>2.0.ZU;2-B
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 dibl ock-copolymer surfactant. In the pure homopolymer limit, long-waveleng th critical fluctuations are sheared apart and the flow stabilizes the disordered phase. Above a threshold block-copolymer composition, howe ver, these fluctuations become enhanced by the shear, implying that th e Bow has a destabilizing effect on the disordered phase.