Spinning of Liquid Crystalline Graphene Oxide Suspension:Process Optimization through Shear Rheology Behavior

In this study, the rheological behavior of graphene oxide dispersion and its correlation with theexfoliation process has been investigated. Graphene oxide dispersion exhibits shear thinning behaviordue to the alignment of particles in the flow direction. This behavior reveals irregularities within acertain range of shear rates, indicating structural disorder in the dispersion. During transient shearflow and at moderate to high shear rates, oscillatory behavior in shear stress is observed. Thisbehavior signifies the formation of oriented structures along the flow direction, and after reachingmaximum alignment, an increase in shear results in the collapse of these structures and a decrease instress. Consequently, the optimal time for fiber network formation with maximum shear stress isdetermined. In this context, a relationship for calculating the dimensions of the fiber spinneret andthe exit velocity has been proposed.

کلیدواژه ها:

Textiles and Fibers ، Graphene oxide suspension ، Spinning ، Rheological behavior.