Adsorption and release of active species into and from multifunctional ionic microgel particles

Haobo Chen; Lenore Dai

doi:10.1021/la401297b

Adsorption and release of active species into and from multifunctional ionic microgel particles

Haobo Chen, Lenore Dai

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

8 Scopus citations

Abstract

We synthesize monodisperse ionic microgel particles which undergo a large change in volume in response to environmental stimuli such as pH and temperature. In addition, the study elucidates the effective uptake and release of rheology modifiers from these microgel particles to alter the bulk viscosity of a surrounding fluid. Moreover, we found that the prepared ionic microgel particles can demonstrate abilities to adsorb and repel iron oxide nanoparticles (Fe₃O₄-NPs) upon pH variation. The extent of the loading of Fe₃O₄-NPs within the colloidal particles and morphology can be manipulated by tunable interactions between the Fe₃O ₄-NPs and ionic microgel particles.

Original language	English (US)
Pages (from-to)	11227-11235
Number of pages	9
Journal	Langmuir
Volume	29
Issue number	36
DOIs	https://doi.org/10.1021/la401297b
State	Published - Sep 10 2013

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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abstract = "We synthesize monodisperse ionic microgel particles which undergo a large change in volume in response to environmental stimuli such as pH and temperature. In addition, the study elucidates the effective uptake and release of rheology modifiers from these microgel particles to alter the bulk viscosity of a surrounding fluid. Moreover, we found that the prepared ionic microgel particles can demonstrate abilities to adsorb and repel iron oxide nanoparticles (Fe3O4-NPs) upon pH variation. The extent of the loading of Fe3O4-NPs within the colloidal particles and morphology can be manipulated by tunable interactions between the Fe3O 4-NPs and ionic microgel particles.",

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AU - Dai, Lenore

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AB - We synthesize monodisperse ionic microgel particles which undergo a large change in volume in response to environmental stimuli such as pH and temperature. In addition, the study elucidates the effective uptake and release of rheology modifiers from these microgel particles to alter the bulk viscosity of a surrounding fluid. Moreover, we found that the prepared ionic microgel particles can demonstrate abilities to adsorb and repel iron oxide nanoparticles (Fe3O4-NPs) upon pH variation. The extent of the loading of Fe3O4-NPs within the colloidal particles and morphology can be manipulated by tunable interactions between the Fe3O 4-NPs and ionic microgel particles.

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Adsorption and release of active species into and from multifunctional ionic microgel particles

Abstract

ASJC Scopus subject areas

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