The Synthesis of Hydrophobically Modified Water-Soluble Polyzwitterionic Copolymers and Responsiveness to Surfactants in Aqueous Solution
Polymers and High Performance Materials
A novel zwitterionic surfactant monomer containing a carboxybetaine moiety and a 10 carbon aliphatic tail was synthesized and copolymerized with acrylamide to yield a water-soluble, hydrophobically modified zwitterionic polymer [Poly(acrylamide-co-(3-(N,N-dimethyl-N-3'-(N'-acryloyl)aza-tridecyl) ammonio butanoate))]. The response of aqueous polymer solutions to the addition of various classes of surfactant was investigated and compared to that of an analogous novel polymer containing the sulfobetaine zwitterion [Poly(acrylamide-co-(N,N-dimethyl-N-3'-(N'-acryloyl) aza-tridecyl) ammonio propane sulfonate))]. It was found that the addition of sodium dodecyl sulfate (SDS) produced a pronounced maximum in viscosity, while dodecyltrimethylammoniumbromide (DTAB), N-dodecyl-N,N-dimethylammonio-1-propanesulfonate (SB3-12), and Triton X-100 either had no effect, or produced a decrease in viscosity. The effect of pH on polymer-SDS interaction was also studied. Lowering pH increased the SDS-polymer interaction and significantly shifted viscosity enhancement to a higher SDS concentration.
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
Johnson, K. M.,
Poe, G. D.,
Lochhead, R. Y.,
McCormick, C. L.
(2004). The Synthesis of Hydrophobically Modified Water-Soluble Polyzwitterionic Copolymers and Responsiveness to Surfactants in Aqueous Solution. Journal of Macromolecular Science Part A-Pure and Applied Chemistry, A41(6), 587-611.
Available at: http://aquila.usm.edu/fac_pubs/3113