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Abstract

The steady-state flow of viscose in a capillary tube viscometer was investigated to determine the rheological properties of this fluid as a function of cellulose concentration and molecular weight. It was found that the flow consistency index increased with increasing cellulose content at constant molecular weight. The flow behavior index was not affected under these conditions. At constant cellulose content, the flow behavior index was found to decrease as the molecular weight of the cellulose molecule was increased. Steady-state velocity profiles for viscose flowing in a round tube under laminar conditions are also presented as a function of the flow behavior index.