Fig. 5.

Variation in (a) shear viscosity, η_f, and (b) shear modulus, μ_f, as a function of mass adsorbed as calculated by the Voigt model, ΔM_Voigt, at 24.0 ± 0.1°C. The lines are used to indicate the changes in slope due to coverage-induced changes in structure of the adsorbed molecules. d_q = 3.34 × 10⁻⁴ m; ρ_q = 2650 kg/m³; ρ_l = 1000 kg/m³ and η_l = 0.001 Pa.s.³⁹