Polyamides phenylene monomers

Polyamide copolymers containing a macromolecular graft substituent were prepared by condensing 4-amino-benzoic acid or a mixture of 1,4-phenylene diamine and adipic acid with 33%, 66%, and 90% 5-(poly(n-butylacrylate)cysteine macromonomer. A second macromolecular monomer, 5-(poly(methyl methacrylate)-cysteine, was also prepared and free radically copolymerized with perfluoromethyl methacrylate. 

Hirose et al. [1] suggested an approximately linear relationship between membrane surface roughness and permeate flux for TFC RO membranes with six different cross-Hnked aromatic polyamide skin layers. On a polysulfone (PSf) substrate, cross-linked aromatic polyamides were formed at a water/solvent interface using m-phenylene diamine (MPD) and 1,3,5-benzenetricarbonyl trichloride as monomers. Isopropyl alcohol content in the aqueous amine phase was changed from 0 to 60 wt.% to control the interfacial surface tension, which eventually led to different surface roughness values. 

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