, in weight percent. The values for the water density were obtained from calculations at ambient pressure (1013 hPa). As the polymer and CUR concentrations were ≤ 1 wt.%, it was assumed that the excess volume (polymer & CUR) during mixing of the samples is negligible. The obtained densities of the polymer/CUR formulations were used to calculate the respective volume fractions, 𝜙. Here the polymer and CUR concentration can be transformed from weight to volume percent using: