0196093 - UH-J 20003014 RIV SIGLE GB eng C - Konferenční příspěvek (zahraniční konf.)
Říha, Pavel - Takimoto, J. - Masubuchi, Y. - Vlasák, Pavel - Koyama, K.
Evolution of induced structure and rheology of electro-rheological immiscible polymeric blends.
Proceedings of the 13th International Congress on Rheology. Vol. 2. Glasgow: Universities design and print unit, 2000, s. 108-110.
[International Congress on Rheology /13./. Cambridge (GB), 31.08.2000-01.09.2000]
Grant CEP: GA AV ČR KSK1076602; GA AV ČR IAA2060703
Klíčová slova: electro-rheological effect, polymer blend, maxwell-like rheological equation
Kód oboru RIV: BK - Mechanika tekutin

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.
Trvalý link: http://hdl.handle.net/11104/0091736