An array of diallylamine salt monomers I containing methyl- and propyl-phosphonate, methylcarboxylate, and propylsulfonate pendants have been synthesized and subjected to copolymerization with maleic acid II using Butler’s cyclopolymerization protocol to obtain a variety of pH-responsive alternate copolymers III, which were then subjected to pH-controlled convertion into cationic, zwitterionic and zwitterionic/anionic polymers . The copolymerization of the monomer containing phosphonate motifs with maleic acid along with the interconversions to different ionic polymers is illustrated in Scheme 1. Also, monomers I and II have been terpolymerized with sulfur dioxide leading to a novel class of pH-responsive polymers IV with interesting solution properties. The efficacy of these polymers as antiscalants are being evaluated to inhibit CaSO4 and/or CaCO3 scale formation which hinders smooth operation of desalination plants.

Synthesis of a new class of alternate ionic cyclocopolymers and their potential use as antiscalants

251st National Meeting (2016)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.