Viscoelastic characteristics of protein solutions and the micromechanics of their motion in porous carriers

Formation of Viscoelastic Protein Droplets on a Chemically Functionalized Surface

“…Hence its density should be higher than that of water, but at the same time considerably lower than 1.35 g/cm 3 , the widely used average value for pure proteins with a molecular weight larger than 20 kDa . The shear modulus of 83.9 kPa is well within the range found for solutions of proteins with a similar weight, and a phase angle slightly below 90° is indicative of a predominantly viscous liquid with a relatively weak elastic character. A reasonable fit to the experimental data can also be obtained by slight variation of ρ v 2 , | | and φ 2 , but it was not possible to get such a fit for significantly different values.…”