Electrorheological Properties of Environmental Friendly Modified Cellulose

Tilki, Tahir and Yavuz, Mustafa and Çabuk, Mehmet and Karabacak, Çigdem (2009) Electrorheological Properties of Environmental Friendly Modified Cellulose. In: 1st International Symposium on Sustainable Development, June 9-10, 2009, Sarajevo, Bosnia and Herzegovina.

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Abstract

Considerable scientific and industrial interest is currently being focused on a class of materials known as electrorheological (ER) fluids, which display remarkable rheological behaviour, being able to convert rapidly and repeatedly from a liquid to solid when an electric field (E) is applied or removed. In this study, biodegredable cellulose (Cell) was modified and converted their carboxyl salts. Modified cellulose (Cell-Li) is characterised by (FT-IR), (SEM), (EDS) and (TGA). Suspensions of native and modified cellulose are prepared in corn oil. Rheological measurements were carried out via a rotational rheometer with a high voltage generator. These suspensions are determined; effects of electric field strength, shear rate, shear stress, temperature etc. onto ER activity. The results show not only that the ER properties are enhanced by increasing the particle concentration and electric field strength, but also the cellulose-based ER fluids exhibit viscoelastic behavior under an applied electric field due to the chain formation induced by electric polarization between particles.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > Q Science (General)
Depositing User: Users 4 not found.
Date Deposited: 07 Feb 2012 12:51
Last Modified: 02 Mar 2012 10:32
URI: http://eprints.ibu.edu.ba/id/eprint/493

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