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|1. (WO2018182525) ZWITTERIONIC POLYMER AND USES THEREOF|
|Applicants:||AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
|Title:||ZWITTERIONIC POLYMER AND USES THEREOF|
The present invention relates generally to zwitterionic polymers. In particular, the invention relates to addition polymerization of vinyl pyridine monomers, comprising zwitterions and carbon-carbon linkages and to a method of preparing the same via a base or nucleophile initiated polymerization. In specific embodiments, zwitterionic homopolymers of 4-vinylpyridine propanesulfonate (4VPPS), 2-vinylpyridine propanesulfonate (2VPPS) or 4- vinylpyridine propanesulfate (4VPPSa) and block copolymers of 2VPPS and 4-vinylpyridine butanesulfonate (4VPBS) were obtained via nucleophilic addition polymerization reaction in an aqueous or polar medium at ambient and atmospheric conditions initiated by base nucleophiles such as N,N,N',N",N"-pentamethyldiethylenetriamine (PMDETA), triethylamine (TEA), 4-(dimethylamino)pyridine (DMAP), N-(4-vinylbenzyl)-N,N-dimethylamine (VBDMA), N,Ndiethylamine (DEA), propylamine (PA), sodium hydroxide (NaOH), 1 -vinylimidazole (VI), sodium methoxide (NaOH), triphenylphosphine (Ph3P), sodium phenoxide (NaOPh), or sodium azide (NaN3).