Cardo amines

Carbon-carbon, free radical initiators 91-94 Cardo amines 210 Cellulosic surfactants 53 4-Chloroformyl(naphthalic anhydrides) 129-132... 

Great improvements in the TFC membranes were also experienced by Chen et al. [56] by incorporating water-soluble amine reactants—sulfonated cardo poly(arylene ether sulfone) (SPES-NH2)—into an aqueous solution containing MPD. Under optimum preparation conditions, the TFC membranes prepared from SPES-NH2 showed remarkable increase in water permeability (51.2 L/m h) with a slight decrease in salt rejection (97.5% at 2000 ppm NaCl, 2 MPa) compared to membranes prepared without SPES-NH2 (37.4 L/m h and 99%). The improved results are attributed to the incorporation of hydrophilic SPES-NH2 to PAs and/or a higher degree of cross-linking formed in the thin selective layer. In view of the importance of hydrophilicity on TFC membrane performance, a novel amine monomer—3,5-diamino-A-(4-aminophenyl) benzamide (DABA)—with three amino... 

Banerjee and group have developed a number of fluorinated PAs for the separation of benzene/cyclohexane by PV [11-13]. Several PAs were prepared from fluorinated bis(ether amine)s with different bulky cardo groups. The backbone of the PAs was systematically altered by changing the acid moiety (terephthalic acid, isophthalic acid, and 5-tert butyl-isophthalic acid), and they studied the effect of these structural changes on the PAs PV properties [72]. The values related to benzene/cyclohexane PV are tabulated in Table 4.9. 

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