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Colloid and Polymer Science
Erschienen in: Colloid and Polymer Science 5-6/2011

01.04.2011 | Original Contribution

Stimuli-responsive nanocomposite gels

verfasst von: Kazutoshi Haraguchi

Erschienen in: Colloid and Polymer Science | Ausgabe 5-6/2011

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Abstract

A new class of polymer hydrogels, nanocomposite hydrogels (NC gels), consisting of a unique organic (polymer)/inorganic (clay) network structure, was synthesized by in situ free-radical polymerization in the presence of exfoliated clay nanoparticles in an aqueous system. The resulting NC gels overcame most of the disadvantages associated with chemically cross-linked hydrogels, such as mechanical fragility, structural heterogeneity, and slow de-swelling rate. By using thermo-sensitive poly(N-isopropylacrylamide) (PNIPA) as a constituent polymer, NC gels with remarkable mechanical, optical, and swelling properties as well as thermo-sensitivity were obtained. The various properties of NC gels, such as transparency, gel volume, cell culturing, and surface friction changed significantly in response to the temperature and surrounding conditions. All the excellent properties and new stimuli-responsive characteristics of NC gels are attributed to the unique PNIPA/clay network structure. The thermo-sensitivities and the transition temperature can largely be controlled by varying the clay content and by the addition of solutes.
Vorheriger Artikel Special themed issue on “Responsive gels”
Nächster Artikel Self-oscillating polymer gel as novel biomimetic materials exhibiting spatiotemporal structure

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Metadaten
Titel
Stimuli-responsive nanocomposite gels
verfasst von
Kazutoshi Haraguchi
Publikationsdatum
01.04.2011
Verlag
Springer-Verlag
Erschienen in
Colloid and Polymer Science / Ausgabe 5-6/2011
Print ISSN: 0303-402X
Elektronische ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-010-2373-9

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