High permeate flux of PVA/PSf thin film composite nanofiltration membrane with aluminosilicate single-walled nanotubes

Novel ultrafiltration membranes with adjustable charge density based on sulfonated poly(arylene ether sulfone) block copolymers and their tunable protein separation performance

“…The free energy of interaction at the interface between the liquid and the membrane surface (∆G SL ) was calculated using Young-Dupre equation (eq. (1)) [35]:…”

Suppressing Salt Transport through Composite Pervaporation Membranes for Brine Desalination

“…As suggested in Table 1, the resistance for MR 0.2 membrane was in the range of RO membranes, with a pure water flux of 1.4 ± 0.4 L/m 2 h. The rejection of dextran (1-2 nm) can remain ~83.4% over 10 h operation. In comparison, the rejection of NaCl (diameter of hydrated Na + 0.716 nm, hydrated Cl − 0.664 nm) was much lower at around 33%, which was lower than the reported PVA composite nanofiltration (NF) membrane [36,37]. Thus, it was believed that the pore size (free volume) of the composite membrane (MR of 0.2) was in the range of NF membrane (below 1 nm).…”

Synthesis and antimicrobial activity of mesoporous hydroxylapatite/zinc oxide nanofibers

“…Fig. 6(b)], but the peak at 1380 cm -1 was absent and no peaks at about 2910, 2940 (-CH 2 stretching) and 1430 cm -1 (-CH in-plane scissoring) for PVA [43] were found. Moreover, an absorption peak at about 875 cm -1 was associated the vibrational frequencies of carbonate ions owing to the absorption of CO 2 on the mes-HA/ZnO nanofiber.…”