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

Stacey Kirkland-York; Keith Gallow; Jacob Ray; Yueh Lin Loo; Charles McCormick

doi:10.1039/b823131a

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

Stacey Kirkland-York, Keith Gallow, Jacob Ray, Yueh Lin Loo, Charles McCormick

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

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.

Original language	English (US)
Pages (from-to)	2179-2182
Number of pages	4
Journal	Soft matter
Volume	5
Issue number	11
DOIs	https://doi.org/10.1039/b823131a
State	Published - 2009

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics

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title = "Temperature-induced ordering and gelation of star micelles based on ABA triblocks synthesized via aqueous RAFT polymerization",

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.",

author = "Stacey Kirkland-York and Keith Gallow and Jacob Ray and Loo, {Yueh Lin} and Charles McCormick",

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doi = "10.1039/b823131a",

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T1 - Temperature-induced ordering and gelation of star micelles based on ABA triblocks synthesized via aqueous RAFT polymerization

AU - Kirkland-York, Stacey

AU - Gallow, Keith

AU - Ray, Jacob

AU - Loo, Yueh Lin

AU - McCormick, Charles

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

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JO - Soft matter

JF - Soft matter

IS - 11

ER -

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

Abstract

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