Figure 1: Experimental determination of the Phase Diagram of the ternary system Water-Acetic Acid-Chitosan.
From: Hybrid Core-Shell (HyCoS) Nanoparticles produced by Complex Coacervation for Multimodal Applications

The Phase Diagram is obtained adding dropwise the acetic acid to the Chitosan and Water, allowing the complete dissolution of the polymer. The green spots (-•-) represent the working point showing the complete dissolution of the polymer. The line drafts the miscibility gap between the two different behaviors.