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Shear viscosity (η(γ˙), filled symbols) and complex viscosity (η*(ω), hollow symbols) as a function of shear rate and angular frequency, respectively, for cellulose dissolved in [C2C1Im][OAc]. (a) Shear and oscillatoray data for [cel] = 2% and DOP = 2710 at 25 °C. Other conditions are fixed as noted, systematically varying only (b) temperature and (c) concentration, where solid horizontal line is the viscosity of the solvent or (d) DOP.
