Noble reverse osmosis composite membrane

Abstract New composite reverse osmosis (RO) membranes based on an m-phenylene diamine/1,2,3,4-cyclopentane tetracarboxylic acid polyamide have been developed. These membranes exhibited the rejection of more than 99% and high flux. The durability of the membranes was influenced by the stereo structure of 1,2,3,4-cyclopentane tetracarbonyl chloride, and the membrane based on cis,trans,cis,trans-CPTC isomer indicated superior stability.