where v 𝑠 is the unit volume of the Flory Huggins lattice that is set by the monomeric solvent molecules. In our co-networks, roughly half of the polymer is PEG and the other half PCL. Thus, we expect a sample average interaction parameter in a common non-selective solvent that is roughly the average of the corresponding 𝜒 𝜂 estimates. This leads to a v/v 𝑠 of 0.67, 0.52, and 3.15 for toluene, THF, and chloroform, respectively. A cross-over between the semi-dilute good solvent regime and the concentrated regime is expected around 𝜙 * * ≈ v/v 𝑠 . Since all networks were prepared and swell below 𝜙 * * , all experiments refer to swelling in the good solvent regime. The line is a power law fit to 𝜙 0 -0.40±0.01 to the simulation data for 𝜙 0 > 0.03. Multiple experimental data points at the same 𝜙 0 refer to different temperature programs. The statistical error of the simulation data is comparable to the symbol size.