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High Performance Polymers
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Glycidoxypropylsilane-functionalized Magnetite as Precursor for Polymer-covered Core-shell Magnetic Particles

Anamaria Durdureanu-Angheluta

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania, Department of Natural and Synthetic Polymers, ‘Gh. Asachi’ Technical University, 700050 Iasi, Romania.

Iuliana Stoica

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania

Mariana Pinteala

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania, pinteala{at}icmpp.ro

Lucia Pricop

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania

Florica Doroftei

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania

Valeria Harabagiu

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania

Bogdan C. Simionescu

'Petru Poni' Institute of Macromolecular Chemistry, 700487 Iasi, Romania, Department of Natural and Synthetic Polymers, ‘Gh. Asachi’ Technical University, 700050 Iasi, Romania., Department of Natural and Synthetic Polymers, ‘Gh. Asachi’ Technical University, 700050 Iasi, Romania.

Horia Chiriac

National Institute of Research and Development in Technical Physics, 700050 Iasi, Romania

Surface-functionalized core-shell magnetic particles were obtained by reacting the hydroxyl groups on the surface of pre-prepared magnetite particles with 3-glycidoxypropyltrimethoxysilane. Fourier transform infrared spectra indicated that epoxy silane molecules were chemically bound onto the surface of magnetite particles through Fe—O—Si linkages. As proved by atomic force microscopy and environmental scanning microscopy combined with energy dispersive X-ray spectroscopy, particles with average core diameter and shell width of about 700 and 70 nm, respectively, were obtained. The covered magnetite particles showed a lower saturation magnetization (46 emu g 1) as compared to the uncoated magnetite (64 emu g 1).

Key Words: Coprecipitation • silane surface modification • core-shell magnetite microparticles

This version was published on October 1, 2009

High Performance Polymers, Vol. 21, No. 5, 548-561 (2009)
DOI: 10.1177/0954008309339234
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