کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
633890 | 1456044 | 2014 | 8 صفحه PDF | دانلود رایگان |

• GO and PVA nanohybrid membrane for pervaporation of toluene/n-heptane mixtures.
• “Pore-filling” composite membranes prepared by dynamic pressure-driven assembly.
• Improvements of PV performance and swelling resistance with the addition of GO.
The stability of the membrane for pervaporation separation of aromatic/aliphatic mixtures is critical for industrial applications. To improve the stability of the membrane, a “pore-filling” membrane was prepared by dynamic pressure-driven assembly of a poly(vinyl alcohol)–graphene oxide (PVA–GO) nanohybrid layer onto an asymmetric polyacrylonitrile ultrafiltration membrane. The results of the swelling experiment suggest that the pore-filling structure could effectively reduce swelling of the nanohybrid membrane. Assembly of the nanohybrid membrane by molecular-level dispersion of GO in PVA led to enhanced affinity of the membrane to aromatic compounds and thus improved performance in the pervaporation of toluene/n-heptane mixtures. Moreover, the dynamic assembly process could easily be used to adjust the separation performance by controlling the pressure, filtration time, polymer, and GO concentration.
Journal: Journal of Membrane Science - Volume 455, 1 April 2014, Pages 113–120