Poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) has been reported to show not only a lower critical solution temperature (LCST) transition around 60 oC, but also an upper critical solution temperature (UCST) transition when a trivalent anionic hexacyanatocobaltate metal salt is added.1 This UCST behavior can be ascribed to the electrostatic interactions between the protonated PDMAEMA units and the trivalent metal salt (see Figure).. In this contribution, we will report the influence of trivalent metal ion salts and PDMAEMA copolymer structure on the thermoresponsive behavior of PDMAEMA. Furthermore, a triple-thermoresponsive diblock copolymer will be demonstrated based on the combination of PDMAEMA and poly(methoxydiethylene glycol methacrylate).2 1 F. A. Plamper, A. Schmalz and A. H. E. M�ller, J. Am. Chem. Soc., 2007, 129 , 14538-14539. 2 Q. Zhang, J.-D. Hong and R. Hoogenboom, Polymer Chemistry, 2013, 4 , 4322-4325.

Tuning the LCST and UCST thermoresponsive behavior of Poly(N,N-dimethylaminoethyl methacrylate) by electrostatic interactions with multivalent metal ions

248th National Meeting (2014)

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