Inorganic porous membranes for nanofiltration of nonaqueous solutions

Performance of PDMS membranes in pervaporation: Effect of silicalite fillers and comparison with SBS membranes

“…The effect of temperature was also examined by changing the range from 41 up to 61°C. Tsuru et al [34,35] and Machado et al [36] also studied this effect and stated that the overall temperature dependency of the flux follows an Arrhenius type of relation:…”

Chemical modification/grafting of mesoporous alumina with polydimethylsiloxane (PDMS)

“…Ceramic membranes present high thermal, mechanical and chemical stability [1]. Unfortunately, their reduced selectivity and limited pore size availability, combined with their hydrophilic character, hampers their application [2,3]. Grafting polymers on ceramic membranes offers the opportunity to tailor and manipulate interfacial properties, while retaining the mechanical strength and geometry of the supported ceramic material.…”

“…Grafting polymers on ceramic membranes offers the opportunity to tailor and manipulate interfacial properties, while retaining the mechanical strength and geometry of the supported ceramic material. Several types of molecules can be used for modification of inorganic materials, for instance phosphate derivatives [4][5][6], chlorosilanes and alkoxysilanes [2,3,7,8], polysiloxanes [9] and Grignard reactants [10]. The strategy employed in this paper, is grafting with polydimethylsiloxanes.…”

Solvent flux behavior and rejection characteristics of hydrophilic and hydrophobic mesoporous and microporous TiO2 and ZrO2 membranes

“…Most of the existing ceramic membranes are hydrophilic, which leads to low non-polar solvent fluxes. Improvement of the non-polar solvents flux can be achieved by applying ceramic membranes modified with a hydrophobic top layer (e.g., by silanation) [11,12].…”