Micellar Polymerization for the Design of Responsive Amphiphilic Polymers

Document Type

Article

Publication Date

11-28-2000

Department

Polymers and High Performance Materials

Abstract

Micellar polymerization allows tailoring of responsive water-soluble amphiphilic polymers having a specified microstructural architecture. Hydrophobic groups can be incorporated in a microblocky fashion along the polymer backbone using this technique. In this manuscript, series of terpolymers containing acrylic acid, methacrylamide and a twin-tailed hydrophobic monomer have been synthesized using micellar polymerization methods. These polymer systems have been characterized using light scattering, viscometry, rheometry, and fluorescence methods. Viscosity studies indicate that the more nonpolar the hydrophobic monomer (longer chain length or twin tailed vs. single tailed), the more enhanced the solution viscosity. Energy transfer measurements indicate the onset of association at ~0.1 g/dl for the MAM/AA/DiC10AM terpolymer. Changes in the energy transfer efficiency as a function of pH closely follow analogous viscosity behavior and are indicative of pH induced expansion and collapse.

Publication Title

ACS Symposium Series

Volume

780

First Page

38

Last Page

57

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