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Issue 11, 2009
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Temperature-induced ordering and gelation of star micelles based on ABA triblocks synthesized via aqueous RAFT polymerization

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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 °C are inversely related to the molecular weight of the polymer.

Graphical abstract: Temperature-induced ordering and gelation of star micelles based on ABA triblocks synthesized via aqueous RAFT polymerization

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Publication details

The article was received on 24 Dec 2008, accepted on 02 Apr 2009 and first published on 28 Apr 2009


Article type: Communication
DOI: 10.1039/B823131A
Citation: Soft Matter, 2009,5, 2179-2182
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    Temperature-induced ordering and gelation of star micelles based on ABA triblocks synthesized via aqueous RAFT polymerization

    S. Kirkland-York, K. Gallow, J. Ray, Y. Loo and C. McCormick, Soft Matter, 2009, 5, 2179
    DOI: 10.1039/B823131A

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