Issue 11, 2009
From the journal:

Soft Matter

Temperature-induced ordering and gelation of star micelles based on ABA triblocks synthesized via aqueous RAFT polymerization†‡

Stacey Kirkland-York,a   Keith Gallow,b   Jacob Ray,a   Yueh-lin Loob  and  Charles McCormick*a  

* Corresponding authors

a University of Southern Mississippi, Department of Polymer Science, 118 College Drive #10076 Hattiesburg, Mississippi 39406, USA
E-mail: Charles.McCormick@usm.edu
Fax: +601 266 5635
Tel: +601 266 5670

b Princeton University, Department of Chemical Engineering, A215 Engineering Quadrangle, Princeton, New Jersey 08544, USA
E-mail: lloo@princeton.edu
Fax: +609 258 0211
Tel: +609 258 9091

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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Article information

DOI
https://doi.org/10.1039/B823131A
Article type
Communication
Submitted
24 Dec 2008
Accepted
02 Apr 2009
First published
28 Apr 2009

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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