کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5182224 | 1380984 | 2013 | 10 صفحه PDF | دانلود رایگان |
Ammonium bisdiethylphosphonate acrylate and methacrylate monomers were synthesized by an aza-Michael addition of 3-aminopropanol across the double bond of bisdiethylphosphonate, followed by acylation with (meth)acryloyl chloride. Free radical copolymerizations of the monomers with an acrylate-functional poly(ethylene oxide) (PEO) macromonomer produced graft copolymers. Quantitative deprotection of the alkylphosphonate groups, then adjustment of the pH to 7.74 ± 0.03, yielded graft copolymers with zwitterionic ammonium bisphosphonate backbones and PEO grafts. Copolymerization kinetic studies showed that the ammonium bisdiethylphosphonate methacrylate incorporated into the copolymers with PEO-acrylate well, but that the corresponding acrylate monomer reacted too slowly. The zwitterionic copolymers spontaneously assembled into aggregates in aqueous media.
Journal: Polymer - Volume 54, Issue 13, 7 June 2013, Pages 3188-3197