Ultrafiltration polyetherketones

Qiu, C., Xu, F., Nguyen, Q.T. and Ping, Z. 2005. Nanofiltration membrane prepared from cardo polyetherketone ultrafiltration membrane by UV-induced grafting method. Memh. Sri. 255 107-115. 

The Chinese patented polyetherketone and polyethersulfone (PEK-C PES-C) are amorphous polymers with high glass transition temperatures (Tj,=228°Cand 260 C respectively)("7-i. They were synthesized by nucleophilic polycondensation of phenolphthalein (PPH) and dichlorobenzophenone or dichlorodiphenylsulfone in sulfolane in the presence of potassium carbonate. They were found to be good membrane materials for ultrafiltration and microfiltration( and could also be used as charged membranes (after sulfonation or chloromethylation/quaternization) for nanofiltration and electrodialysis processes. 

Qiu, C., Q. T. N. L. Zhang, and Z. Ping. 2006. Nanofiltration membrane preparation by photomodification of cardo polyetherketone ultrafiltration membrane. Sep. Purif. Technol. 51 325-331. 

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See also in sourсe #XX -- [ ]

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