6533b862fe1ef96bd12c652b

RESEARCH PRODUCT

One step grafting of monomethoxy poly(ethylenglycol) during synthesis of maghemite nanoparticles in aqueous medium

Denis ChaumontClaire-hélène BrachaisLing HuJean-pierre CouvercelleDiana Hach

subject

Thermogravimetric analysisMaterials scienceAnalytical chemistryInfrared spectroscopyNanoparticleMaghemitemacromolecular substances02 engineering and technologyengineering.material010402 general chemistry01 natural scienceschemistry.chemical_compoundsymbols.namesakeColloid and Surface ChemistryZeta potentialaqueous mediumFourier transform infrared spectroscopyComputingMilieux_MISCELLANEOUShybridstechnology industry and agriculturemonomethoxy poly(ethylene glycol)021001 nanoscience & nanotechnologygrafting0104 chemical sciences[ CHIM.POLY ] Chemical Sciences/Polymersmaghemite[CHIM.POLY]Chemical Sciences/Polymerschemistrysymbolsengineering0210 nano-technologyRaman spectroscopyEthylene glycolNuclear chemistry

description

Abstract Grafting of silanated monomethoxy poly(ethylene glycol) (m-PEG) onto maghemite nanoparticles surface in aqueous medium through one step procedure was investigated. The major characteristic of this work is that the grafting of m-PEG was produced during the synthesis of maghemite nanoparticles. The maghemite nanoparticles were characterized by photon correlation spectroscopy (PCS), zeta potential measurement, X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), Fourier transform infrared spectrometer (FTIR), and X-ray photoelectron spectroscopy (XPS). The spinel structure of maghemite nanoparticles was verified and successful grafting of m-PEG was evidenced. Thermogravimetric analysis (TGA) attested the presence of 15% (w/w) of m-PEG around the maghemite nanoparticles.

10.1016/j.colsurfa.2008.07.044https://hal.archives-ouvertes.fr/hal-00458458