In another way, with the increase of NMP content in PPESK/NMP/(H_2O+NMP) system, the absolute value of the intercept and the coagulation ability of the casting solution were decreased, which is beneficial to the delayed phase separation.

• 同时，对于PPESK/NMP/(H_2O+NMP)体系，随着凝胶浴中NMP含量的增加，|a|降低、凝胶浴的凝胶能力减弱、降低了相分离过程中各组分的相对扩散速率，有利于延迟相分离。