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Membrane Morphology And Phase Diagrams Of Mangiferin Modified Poly(Amide)/Poly(Vinyl Pyrrolidone) Blends, Chandrasekaran Neelakandan, Thein Kyu

Thein Kyu

Mangiferin modified membranes were prepared based on amorphous poly(amide) (PA)/poly(vinyl pyrrolidone) (PVP) blends by coagulation via solvent (dimethyl sulfoxide, DMSO) and non-solvent (water) exchange. To understand miscibility behavior and provide guidance to kinetic pathways of the coagulation process, various ternary phase diagrams of PA/DMSO/water, PA:PVP/DMSO/water, and mangiferin/DMSO/water mixtures were constructed. The ternary phase diagram of PA/DMSO/water mixture is consisted of isotropic liquid and liquid+liquid coexistence regions, whereas the mangiferin/DMSO/water system exhibited a crystal+isotropic coexistence region. Addition of PVP to the PA/DMSO/water solution showed little or no effect on the ternary phase diagram of PA:PVP/DMSO/water, whereas the addition of mangiferin to …