Rheological Behavior of Blend Spinning Solution of Sodium Alginate and Carbon Black
Rheological properties of blend spinning solution of sodium alginate and carbon black (SA/CB) were investigated. The results reported that blend spinning solutions were non-newtonian fluids. The apparent viscosity and structural viscosity index increased with increasing CB content in SA spinning solution, but the non-newtonian index decreased, both demonstrated the blend solution was sensitive to shear rates. Blend spinning solution with 6% CB had large flow activation energy (Eη), so the temperature must be controlled exactly in spinning. Temperature had similar impact on sample spinning solutions: the apparent viscosity decreased when it increased. Study on dynamic rheological behavior shows SA/CB blend spinning solutions had greater die swell ratio and worse flowability than pure SA solution, but the flowability of blend solutions could be regulated by changing temperature.
Xiaoming Qian and Huawu Liu
L. W. Tan et al., "Rheological Behavior of Blend Spinning Solution of Sodium Alginate and Carbon Black", Advanced Materials Research, Vols. 332-334, pp. 268-274, 2011