Effects of genistein modification on miscibility and hydrogen bonding interactions in poly(amide)/poly(vinyl pyrrolidone) blends and membrane morphology development during coagulation

Asymmetric porous membranes formed by coagulation-induced phase separation in poly(ether sulfone)/poly(vinyl pyrrolidone)/genistein blends

“…In the DSC investigation of PVP/genistein (PVP/G) blends, a single T g was evident in all PVP-rich compositions that systematically shifted to lower temperatures with increasing genistein [20]. With increasing PVP in the PVP/G blends, the melting point depression of genistein crystals occurred.…”

“…With increasing PVP in the PVP/G blends, the melting point depression of genistein crystals occurred. The inter-and intra-species interactions between functional groups of the PVP/G blend were further examined by FTIR [20] in order to determine plausible interactions such as OeHeO]C (self-hydrogen bonding between genistein), OeHeOeH (self-hydrogen bonding between genistein), and OeHeO]C (cross-or inter-specie hydrogen bonding). The C]O functional group of PVP was found to form inter-specie hydrogen bonds with the OeH group of genistein while releasing some of the C]O group forming the self-hydrogen bonding of genistein.…”

“…It should be borne in mind that the FTIR band shifts among these three binary pairs were in the order of PVP/G > PES/G > PES/PVP [20], implying that the molecular interaction in the PES/PVP blend is the weakest among the three mixtures, although this pair is completely miscible. Moreover, the PVP/G blends exhibited a wider isotropic range than that on the PES/G axis, which in turn suggests that genistein has a larger preferential interaction with PVP relative to that of the PES counterpart.…”

Stabilization of epoxidized soybean oil‐plasticized poly(vinyl chloride) blends via thermal curing with genistein

“…G exhibits many pharmaceutical benefits, specifically anti‐oxidant and anti‐inflammatory properties . Recently, neat G as well as G modified polymer blend membranes have shown to substantially reduce the generation of oxygen radicals and pro‐inflammatory cytokines in in vitro studies …”

“…13,14 Recently, neat G as well as G modified polymer blend membranes have shown to substantially reduce the generation of oxygen radicals and pro-inflammatory cytokines in in vitro studies. [15][16][17][18][19] In general, G modification is capable of improving the antioxidant property as well as biocompatibility of ESBO-plasticized PVC, but G is immiscible with PVC. Hence, we shall first investigate the miscibility character of PVC/ESBO and ESBO/G binary pairs and then evaluate the phase behavior of their ternary PVC/ESBO/G blends using differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, and polarized optical microscopy (POM).…”