It was found that the phase separation behavior of the three systems, i.e., PEI/DMAc/H2O, PEI/DMAc/ethanol and PEI/DMAc/acetic acid (AA), all agree with the LCP correlation.

• 研究结果表明：LCP关系可以用于描述PEI/N，N-二甲基乙酰胺(DMAc)/水、PEI/DMAc/乙醇和PEI/DMAc/乙酸三元体系在相分离时的浊点组成，并可以依据LCP关系外推计算三个体系的双节线；