Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
November 02, 2009
NEW TECHNOLOGIES: Microwave and Ionic Liquids: Inverse Temperature Dependence of Viscosity in Aqueous Medium of Grafted Copolymers
Ella Bezdushna, Helmut Ritter*
We elaborated a route to the thermosensitive polyelectrolyte system composed of 1-methyl-3-vinylimidazolium salt with -cyclodextrin complexed counterions and mono-(meth)acrylic functionalized poly(N-isopropylacrylamide) as grafted side chains via a three-step synthetic procedure. The aqueous solution of the polyelectrolyte displays partially inverse thermoresponsive behavior; it exhibits enhancement of shear viscosity up to body temperature. Furthermore, based on classically prepared poly(NIPAAm) bearing terminal amino groups, corresponding (meth-) acrylamide-type of macromonomers were easily obtained under microwave conditions.
Macromol. React. Eng. DOI: 10.1002/mren.200900018
Other contributions to the article series on new technologies in polymer reaction engineering can be found at: http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1862-8338/2465_nt.html