Low frequency viscosities of PS/PMMA/PS-b-PMMA blends |
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Authors: | Constant Wippler |
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Affiliation: | (1) Institut Charles Sadron (EAHP-CRM), 4 rue Boussingault, F-67000 Strasbourg, France |
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Abstract: | Assuming that the viscosimetric behaviour at low frequencies is mainly determined by the behaviour of the continuous phase, it becomes possible to explain the behaviour of PS/PMMA blends from a limited number of hypotheses. The main hypothesis is that the PMMA layer next to the interface gelifies, while the PS layer next to the interface slips under the influence of a hydrodynamical field. The explanation concurs with all the experimental data which we obtained, regardless of the concentration of PS or PMMA. Moreover the effect of adding a block copolymer PS-b-PMMA can be explained. |
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