Are there any specific characteristics makes PES more favorable than other polymers?
Dear Pankaj,
Membrane filtration uses several different materials, but the two most common polymers are polyethersulfone (PES) and polyvinylidene difluoride (PVDF), both produced in high volume for a variety of applications.
Among the advantages of polyethersulfone (PES) membranes are:
1-Tolerant to Solvents, Esters and Aromatics
2-Absolute bacteria and virus removal from surface waters, beverage and liquid food processing and byproduct streams
3-High flux results in high yields
4-Low energy usage reduces power consumption and cost
http://www.appliedmembranes.com/polyethersulfone-ultrafiltration-membranes-uf-membranes.html
http://www.waterworld.com/articles/wwi/print/volume-29/issue-2/technology-case-studies/membrane-manufacturing-a-new-chemical-romance.html
Hoping this will be helpful,
Rafik
Polyethersulfone is the most preferred porous support for making thin film composite (usually with polyamide as the selective layer) for RO application as it has an excellent mechanical strength, good thermal resistance and is easily fabricated. PVDF is probably too hydrophobic for RO, but is good for membrane distillation. In addition to PES, polyacrylonitrile (PAN) is also a good choice due to its low price.
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