Temperature-Induced Ordering and Gelation of Star Micelles Based on ABA Triblocks Synthesized Via Aqueous RAFT Polymerization
Document Type
Article
Publication Date
2009
Department
Polymers and High Performance Materials
Abstract
The reversible formation of ordered physical gels from stimuli-responsive ABA [A poly(N,N-dimethylacrylamide) (PDMA), B = poly(N-isopropylacrylamide) (PNIPAM)] triblock copolymers is investigated utilizing dynamic light scattering, small angle X-ray scattering, and low-shear rheometry. As the temperature is increased above the phase transition temperature of the PNIPAM segment, triblock copolymers under a critical molecular weight are capable of packing into body-centered cubic arrays. Rheometric tests indicate that the storage moduli of the gels at 50 degrees C are inversely related to the molecular weight of the polymer.
Publication Title
Soft Matter
Volume
5
Issue
11
First Page
2179
Last Page
2182
Recommended Citation
Kirkland-York, S.,
Gallow, K.,
Ray, J.,
Loo, Y.,
McCormick, C. L.
(2009). Temperature-Induced Ordering and Gelation of Star Micelles Based on ABA Triblocks Synthesized Via Aqueous RAFT Polymerization. Soft Matter, 5(11), 2179-2182.
Available at: https://aquila.usm.edu/fac_pubs/1173