This document describes a study that constructed the ternary phase diagram for the polyamide-6/formic acid/water system and evaluated the membrane morphology. Asymmetric polyamide-6 membranes were prepared using phase inversion. The binodal curve for the ternary system was determined experimentally by titrating a polyamide solution with water. The phase separation process and resulting.. This handbook concerned with the ternary phase diagram (polymer (p)/solvent (s)/nonsolvent (ns))and the evaluations of membrane-forming system. According to the theory of phase separation three modes of phase separation can take place in such ternary system: nucleation and growth of the polymer lean phase, spinodal phase separation and nucleation and growth of the polymer rich phase. Since.
In this article, the ternary phase diagram in polyamide-6 (PA6)/Formic acid (FA)/Water system was constructed by experimental measurement. The determination of binodal curve was measured according to titration of the PA6 polymer solution with water as a non-solvent until the onset of turbidity.. This document discusses the construction of a ternary phase diagram for a polyamide-6/formic acid/water system and evaluation of membrane morphology. Key points: 1) The binodal curve, which indicates the onset of liquid-liquid phase separation, was determined experimentally by titrating a polyamide-6 polymer solution with water as a non-solvent. 2) Scanning electron microscopy was used to.