Sol–gel derived poly(vinyl alcohol)/maleic acid/silica hybrid membrane for desalination by pervaporation
By Zongli Xie, M. Hoang, T. Duong, Derrick Ng, B. Dao, Stephen R. Gray. 2011
157 citations recorded by the source corpus.
Abstract Highly dispersed homogeneous hybrid polymer–inorganic membranes based on poly(vinyl alcohol) (PVA), maleic acid (MA) and inorganic silica were synthesized via a sol–gel method. Tetraethoxy-silane (TEOS) was used as the silica precursor with MA as an additional crosslinking agent. A range of techniques such as FTIR, SEM, TGA, XRD and DSC were used to characterise the nanostructure and properties of hybrid membranes. Results revealed silica nanoparticles ( The chemically crosslinked PVA with maleic acid and silica resulted in the formation of new hybrid membranes with improved pervaporation properties for desalination application. The pervaporation separation performance of aqueous salt solution was found to be directly related to the diffusion coefficient of water through hybrid PVA/MA/silica membranes. Introduction of MA and silica at given amounts into the polymer chain increased the amorphous region of the membrane and favoured the diffusion of water molecules through the membrane. A water flux of 6.93 kg/m 2 h with salt rejection of >99.5% was achieved at a 6 Torr vacuum and 22 °C.
Subfields: Biomedical Engineering, Mechanical Engineering, Water Science and Technology
View Paper: https://www.semanticscholar.org/paper/9d11ad8c59ca72a0d054f6f8cc121b377c369d2c
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In Biomedical Engineering
In Mechanical Engineering
In Water Science and Technology
Citations in the corpus
- Ultrathin two-dimensional MXene membrane for pervaporation desalination (2018, background): “Alternatively, membrane pervaporation has been reported for seawater desalination recently, because of its potential in energy efficiency and easy operation [7-11].”
- Carbon nanotubes for desalination: Performance evaluation and current hurdles (2013, background): “Previously, thin film nanocomposite incorporated with inorganic fillers such as zeolite, silica and titanium oxide nanoparticles of various sizes has been developed to achieve promising performance with respect to flux and rejection [87–89].”