Figure 10: Fusion entropy phase diagrams of pure NIF, NIF/PEG 4000 mixtures (90%–10% NIF), and pure PEG 4000. The samples were prepared by co-melting. No endothermic peaks were observed for 40%–0% NIF. The molecular weights of NIF and PEG were 346.335 and 4000.000 g/mol, respectively.