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Rheological behaviour of some magnetic polymer composites

F. MUSTATA1,* , N.TUDORACHI1

Affiliation

  1. Institute of Macromolecular Chemistry ”P. PONI”, Aleea Gr. Ghica Voda, 41A, 700487, Iasi, Romania

Abstract

The investigation reports the flow properties of concentrated solutions of 2-Ethylhexyl acrylate/Styrene/Acrylic acid, copolymers modified with magnetic particles of Fe3O4, as functions of concentration and shear rate. The measurements were carried out by means of a rotary viscometer equipped with coaxial cylinder device at shear rates varying between 1 and 1310 sec-1, temperature range 20 oC to 40 oC, and filler content varying between 15% and 50% (w/w), reported to the weight mixture. The rheological parameters evaluated on the flow are the consistency index, the flow index and the yield stress. The literature rheological models were employed to investigate the shear stress dependence with the shear rate..

Keywords

Acrylic copolymers, Magnetic iron oxide powder, Rheological behaviour.

Submitted at: Oct. 15, 2007
Accepted at: Dec. 10, 2008

Citation

F. MUSTATA, N.TUDORACHI, Rheological behaviour of some magnetic polymer composites, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 12, pp. 3346-3352 (2008)