Nano Archive

Temperature-, pH-, and magnetic-field-sensitive hybrid microgels

Bhattacharya, Sanchita and Eckert, Franziska and Boyko, Volodymyr and Pich, Andrij (2007) Temperature-, pH-, and magnetic-field-sensitive hybrid microgels. SMALL, 3 (4). pp. 650-657.

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We demonstrate a simple route for the preparation of novel hybrid particles with multiple sensitivities. Aqueous polymeric microgels are modified by magnetite nanoparticles in the preparation of temperature and pH-sensitive hybrids with a high magnetic response. Up to 15 wt % of magnetite nanoparticles are loaded into microgels. The influence of the amount of magnetite in the microgel structure on the morphology and colloidal properties is discussed. The presence of the magnetite nanoparticles in the microgel decreases its degree of swelling and shifts the volume phase-transition temperature to higher values. Nanostructured composite films with controlled morphologies can be prepared by water evaporation and deposition of the hybrid microgels on a solid substrate.

Item Type:Article
Uncontrolled Keywords:gels; magnetic properties; magnetite; nanoparticles; polymers
Subjects:Material Science > Functional and hybrid materials
Physical Science > Nanomagnetics
Material Science > Nanostructured materials
ID Code:2504
Deposited By:Farnush Anwar
Deposited On:09 Jan 2009 15:00
Last Modified:09 Jan 2009 15:00

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