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Evolution of induced structure and rheology of electro-rheological immiscible polymeric blends
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SYSNO ASEP 0196093 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Evolution of induced structure and rheology of electro-rheological immiscible polymeric blends Author(s) Říha, Pavel (UH-J) SAI, ORCID, RID
Takimoto, J. (JP)
Masubuchi, Y. (JP)
Vlasák, Pavel (UH-J) SAI, ORCID, RID
Koyama, K. (JP)Source Title Proceedings of the 13th International Congress on Rheology, 2. - Glasgow : Universities design and print unit, 2000 Pages s. 108-110 Number of pages 3 s. Action International Congress on Rheology /13./ Event date 31.08.2000-01.09.2000 VEvent location Cambridge Country GB - United Kingdom Language eng - English Country GB - United Kingdom Keywords electro-rheological effect, polymer blend, maxwell-like rheological equation Subject RIV BK - Fluid Dynamics R&D Projects KSK1076602 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) IAA2060703 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) Annotation The bridging of the electrodes by the induced columnar structure of urethane-modified polypropylene glycol (UPPG) is a dominant feature of the response of electrorheological UPPG/dimethylsiloxane polymeric blends to the imposed electric field. The formation of the columnar structure in the quiescents blend is described as the coalescence process of dispersed UPPG droplets due to dipole moments in the droplets. The breakage and formation of the bridging columns in flow is described by a random function affecting the macroscopic flow behaviour of blends modelled by the Maxwell-like rheological equation. The results show that the proposed rheological equation describes well steady and transient shear flows. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2001
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