Sodium montmorillonite clay loaded novel mixed matrix membranes of poly(vinyl alcohol) for pervaporation dehydration of aqueous mixtures of isopropanol and 1,4-dioxane

A facile route for fabricating novel polyelectrolyte complex membrane with high pervaporation performance in isopropanol dehydration

“…Stable water content with increasing feed temperature can also be achieved by chemical cross-linking, which however sacrifices permeate flux. What unique here is that HPECMs give both high water content in permeate and permeate flux, i.e., a permeate flux of 3.0 kg/m 2 h and a separation factor of 960 for HPECM5.5 at 75 • C. To the best of our knowledge, normally for common polymeric membranes, permeate flux for isopropanol dehydration is below 1.5 kg/m 2 h at the comparable operation condition [19][20][21][22]. So, performance of HPECM5.5 shows substantial superiority among the already reported performances of polymeric membranes [1].…”

Multilayer mixed matrix membranes containing modified-MWCNTs for dehydration of alcohol by pervaporation process

“…Furthermore, several inorganic compounds have been used as filler in the synthesis of the mixed matrix membranes for solvent dehydration by the pervaporation process. For example, zeolite [5][6][7]17,18,23], titanium oxide (TiO 2 ) [24,25], iron [22], sodium montmorillonite clay [26], carbon nanotubes (CNTs) [27][28][29] and silica [30]. There are some drawbacks in the preparation of mixed matrix membranes such as poor distribution of the filler in the polymer matrix and weak contact of inorganic filler particles in the polymer matrix.…”

Pervaporation of Toluene—n-Heptane Mixtures with Hybrid PVC Membranes Containing Inorganic Particles

“…The water selectivity was also found to increase from 1116 to 2241 for PVA/NaMMT composite membranes, whereas the corresponding flux values (= 0.07 kg h -1 m -2 ) were lower than the reference value [13].…”