Aqueous Solution Properties of pH-Responsive AB Diblock Acrylamido-Styrenic Copolymers Synthesized Via Aqueous Reversible Addition-Fragmentation Chain Transfer
Document Type
Article
Publication Date
4-1-2004
Department
Polymers and High Performance Materials
Abstract
Here we report the synthesis and solution characterization of a novel series of AB diblock copolymers with neutral, water-soluble A blocks consisting of N,N-dimethylacrylamide and pH-responsive B blocks of N,N-dimethylvinylbenzylamine. To our knowledge, this represents the first example of an acrylamido-styrenic block copolymer prepared directly in a homogeneous aqueous solution. The best blocking order [with poly(N,N-dimethylacrylamide) as a macro-chain-transfer agent] yielded well-defined block copolymers with minimal homopolymer impurities. The reversible aggregation of these block copolymers in aqueous media was studied with H-1 NMR spectroscopy and dynamic light scattering. Finally, an example of core-crosslinked micelles was demonstrated by the addition of a difunctional crosslinking agent to a micellar solution of the parent block copolymer. (C) 2004 Wiley Periodicals, Inc.
Publication Title
Journal of Polymer Science Part A-Polymer Chemistry
Volume
42
Issue
7
First Page
1724
Last Page
1734
Recommended Citation
Sumerlin, B. S.,
Lowe, A. B.,
Thomas, D. B.,
Convertine, A. J.,
Donovan, M. S.,
McCormick, C. L.
(2004). Aqueous Solution Properties of pH-Responsive AB Diblock Acrylamido-Styrenic Copolymers Synthesized Via Aqueous Reversible Addition-Fragmentation Chain Transfer. Journal of Polymer Science Part A-Polymer Chemistry, 42(7), 1724-1734.
Available at: https://aquila.usm.edu/fac_pubs/3306